Skip to main content
HP HP · Laptop Screen Flickering · Govandi

HP Laptop
Screen Flickering
in Govandi

Expert diagnosis & repair for Laptop Screen Flickering on your HP device in Govandi. Free doorstep pickup, genuine parts & 90-day warranty.

✓ ₹350 Inspection (refunded if you proceed with repair) ✓ Free Doorstep Pickup ✓ Same-Day Repair ✓ 90-Day Warranty ✓ All HP Models

Open 9 AM – 9 PM · 7 days · ₹350 inspection fee (refunded if you proceed with repair)

Technician inspecting a laptop motherboard under a microscope at the repair bench Top-down view of a technician servicing a laptop beside an SSD and a cleaning brush
Xigox technicians at the repair bench
Symptom Checker

Is Your HP Device Showing These Signs?

Common symptoms of Laptop Screen Flickering on HP devices. Recognise 2 or more? Book a ₹350 inspection (refunded if you proceed with repair) now.

Screen cracked, shattered or deeply scratched

Display flickering, showing lines, or goes blank

Touch response inaccurate or completely unresponsive

Dead pixels, discolouration or screen burn-in visible

Screen only functions at certain tilt angles

Display panel physically separated from the chassis

Don't Delay — Laptop Screen Flickering Gets Worse Over Time

Unaddressed hardware issues worsen and can lead to secondary damage, escalating repair costs significantly.

Book Inspection (₹350)
Root Cause Analysis

Why Does Laptop Screen Flickering Happen on HP Devices?

Knowing the root cause ensures a precise repair — not just a temporary fix.

Physical Impact

Accidental drops, pressure or blunt force fracturing the display panel or digitiser layer.

Electrical Surge

Power spikes or incompatible chargers damaging the backlight driver or display IC.

Thermal Stress

Extreme temperature cycles causing LCD delamination or pixel degradation over time.

Manufacturing Defect

Factory-level quality issues in the display module, more common in older models.

Cost Estimate

HP Laptop Screen Flickering Repair Cost in Govandi

Transparent pricing · ₹350 inspection fee (refunded if you proceed with repair) first · Pay only after approval

Repair TypeEstimated CostWarranty
Bezel Clip Repair ₹549 - ₹1,199 60 days
Laptop Blue Screen Fix — Basic fix ₹599 90 Days
Laptop & Computer Blue Screen (BSOD) Fix — Basic fix ₹599 90 Days
Laptop & Computer Black Screen Fix — Basic fix ₹599 90 Days
Crack Repair ₹749 - ₹1,899 60 days
Bezel Reattachment ₹749 - ₹1,699 60 days

Final cost confirmed after ₹350 inspection (refunded if you proceed with repair). Work starts only with your approval.

Get Exact Quote

Why Us?

Why Choose Xigox for HP Laptop Screen Flickering in Govandi?

With 1,00,026+ successful repairs and a 4.9-star rating, Xigox is an independent HP repair specialist serving Govandi. Covering the entire Mumbai Suburban district with same-day service.

No Fix, No Repair Fee

If we cannot resolve your HP Laptop Screen Flickering issue, you pay nothing beyond the inspection fee.

Component-Level Repairs

We repair HP hardware at chip and board level where it's safe to do so — often a fraction of a full-module swap.

Experienced Technicians

Our engineers work on HP hardware regularly. Every repair is tested before return.

Genuine & OEM-Grade Parts

We use genuine HP parts wherever available; otherwise OEM-compatible components.

90-Day Parts Warranty

Every repair backed by a written 90-day warranty. Same fault recurs? We fix it free of charge.

Same-Day Turnaround

Most HP Laptop Screen Flickering jobs in Govandi are completed same-day. Urgent service available for critical cases.

1,00,026+
Repairs Completed

Since 2011

4.9 ★
Average Rating

9,727+ reviews

90 Days
Repair Warranty

Parts & labour

30 Min
Avg Response

For common issues

Free
Pickup & Drop

₹350 inspection fee

2011
Est. Since

15+ yrs in Mumbai Suburban

Who repairs your device

Repaired in-house by Xigox technicians

Your HP is handled by Xigox technicians from start to finish. It is never handed on to another shop. Work that needs the repair bench is done at our workshop in Virar West.

Board-level faults are traced with a microscope, a multimeter and a soldering station before any part is replaced, and parts are fitted only after you approve the quote.

We don't open your personal files during a repair. When a job needs access to your data, such as data recovery or a Windows reinstall, we ask you first.

  • Repaired in-house, not outsourced
  • Quote approved by you before work starts
  • Your files stay private
  • Microscope and board-level tools
  • Genuine or OEM-grade parts
  • 90-day warranty on repairs
Technician inspecting a laptop motherboard under a microscope at the repair bench Technician testing a laptop mainboard with a multimeter beside a Xigox-branded monitor Technician brushing dust off an opened laptop motherboard with a cleaning brush Technician inspecting a laptop motherboard under a microscope at the repair bench
Xigox technicians at the repair bench.
Our Process

How We Fix HP Laptop Screen Flickering

Step-by-step from booking to delivery — complete transparency, no surprises

01

Tell Us the Problem

Call, WhatsApp or book online. Tell us about the Laptop Screen Flickering on your HP laptop or computer in Govandi. No technical expertise needed.

02

Free Pickup & Drop

We pick up your HP laptop or computer from your Govandi address at no transport cost. Bring it to us or we come to you.

03

₹350 Inspection

A HP specialist examines your laptop or computer and identifies the exact root cause of the Laptop Screen Flickering. Full written report provided — ₹350 fee refunded if you proceed with repair.

04

Transparent Quote

We share a detailed repair quote. Work begins only after your explicit approval — no hidden charges, no surprises.

05

Professional Repair

Our engineers fix the Laptop Screen Flickering using OEM-grade HP parts. A 12-point quality checklist is completed before your laptop or computer is returned.

06

90-Day Warranty + Delivery

Your HP laptop or computer is returned to your Govandi address with a written 90-day warranty. Same fault recurs? We fix it free of charge.

Customer reviews

What Customers Say About HP Laptop Screen Flickering in Govandi

4.9/5 · 3 reviews shown

See all 9,727+ reviews

HP Pavilion 15-eg — Flickering Screen Fix

“Screen on my HP Pavilion 15-eg kept flickering and going black randomly. Xigox Juhu found a damaged display cable and fixed it in forty-five minutes for just twelve hundred rupees. Other shops wanted five thousand for full replacement.”
V Vivek Ranade Govandi · 10 Aug 2024 25

HP Omen 16 — Hinge Fix

“Both hinges on my HP Omen 16 were cracked and the screen wobbled badly. Xigox Juhu replaced them with stainless-steel units and reinforced the mounting points. Smooth, firm movement now. Looks factory-original again.”
A Archana Nipunge Govandi · 20 Aug 2024 43

HP Pavilion 15-eg — Keyboard Fix

“Spilled tea on my HP Pavilion 15-eg and half the keys died. Xigox Juhu replaced the full keyboard with a matching backlit unit in about an hour. Typing feels brand new and the backlight works perfectly. Great service.”
P Prasad Godbole Govandi · 29 Sep 2024 12

Repair examples

Recently Repaired Laptops

View All Recent Repairs

MacBook

Pro M3 14-inch

Fixed
Issue
Screen shows vertical lines, external display works fine.
Solution
Replaced LCD panel and display cable. Updated display drivers.
Virar West 3 Hours
  • Screen
  • MacBook
  • Display

Dell

Latitude 5430

Fixed
Issue
Battery draining from 100% to 0% in 45 minutes. Dell diagnostics showing battery wear 85%.
Solution
Replaced battery with genuine Dell cell. Calibrated battery controller. Restored to 7+ hours backup.

Technician's note

Corporate laptop with heavy daily use. Battery had exceeded 800 charge cycles.

Borivali West 45 Minutes
  • Battery
  • Dell
  • Corporate

Acer

Aspire 5 A515

Fixed
Issue
Laptop extremely slow with original 1TB HDD. Boot time over 3 minutes.
Solution
Upgraded to 512GB NVMe SSD. Cloned all data. Installed fresh Windows 11 with drivers. Boot time reduced to 8 seconds.

Technician's note

HDD was healthy — kept as secondary storage. Massive performance improvement.

Dadar West 2 Hours
  • SSD
  • Acer
  • Upgrade

MacBook

Air M2

Fixed
Issue
Water spilled on keyboard. Laptop dead, no response to charger. Corrosion visible on logic board.
Solution
Ultrasonic cleaning of logic board. Replaced 2 corroded ICs and damaged keyboard flex cable. Full functionality restored.

Technician's note

Water had not reached SSD — all data intact. Board-level repair saved customer from logic board replacement.

Malad West 6 Hours
  • Water Damage
  • MacBook
  • Board Repair

HP

Pavilion x360

Fixed
Issue
Right hinge broken, screen wobbling. Back panel cracked near hinge mount.
Solution
Replaced both hinges with reinforced metal hinges. Repaired back panel crack with epoxy bonding.

Technician's note

Common issue in x360 convertible models. Both hinges replaced for balanced tension.

Goregaon West 2 Hours
  • Hinge
  • HP
  • Convertible

ASUS

VivoBook 15

Fixed
Issue
Laptop dead — no power, no charging LED. Other repair shops quoted motherboard replacement.
Solution
Diagnosed failed power IC using multimeter. Replaced IC at chip level. Laptop boots and charges normally.

Technician's note

Power surge damaged the charging IC. Recommended using a surge protector.

Powai 4 Hours
  • Motherboard
  • ASUS
  • Chip-Level

FAQ

FAQs — HP Laptop Screen Flickering in Govandi

Everything you need to know before booking your inspection

10 questions answered

You bring it straight back. The same fault inside 90 days is covered under warranty — no second inspection fee, no diagnostic charge, no argument. The cover is there in writing so you do not have to just take our word for it. Free pickup also available in Govandi East, Shivaji Nagar Govandi, Mankhurd and surrounding areas.
We use OEM or OEM-grade components and tell you which one your quote covers before work starts. We do not fit unbranded aftermarket parts or recycled pulls sold as new — part quality is the single biggest factor in whether a laptop repair lasts, so it is not somewhere we cut cost. We've been serving Mumbai Suburban district for over 15 years.
That is what the ₹350 inspection is for. Symptoms overlap constantly — the same visible behaviour can come from three different components. We test rather than guess, then show you what we found before quoting. If the actual fault turns out to be something cheaper, the quote reflects that. Trusted by customers throughout Mumbai Suburban — rated 4.9★ across 9,727+ reviews.
Usually not for long. Left alone, most faults of this kind put stress on neighbouring components and turn a contained repair into a board-level one. If you cannot bring it in immediately, tell us the symptoms on WhatsApp and we will tell you honestly whether it can wait a few days or should be powered down now. We've been serving Mumbai Suburban district for over 15 years.
Yes — Xigox specialises in HP Blue Screen Error across Govandi. Our experienced technicians diagnose and fix the problem efficiently, using OEM-quality parts and backed by a 90-day warranty. Free doorstep pickup is available in Govandi — call or WhatsApp +91 74997 61196. Customers near Shivaji Nagar in Govandi get our fastest response times.
Most HP Blue Screen Error issues in Govandi are resolved the same day — typically within 2–4 hours of pickup. We provide an accurate time estimate during the ₹350 inspection (refunded if you proceed with repair) so you're never left guessing. We've been serving Mumbai Suburban district for over 15 years.
Common causes of HP Blue Screen Error include physical impact, wear and tear, manufacturing defects, water damage, overheating, or software conflicts. Xigox technicians perform a thorough diagnosis to identify the root cause and fix it permanently rather than applying a temporary patch. Trusted by customers throughout Mumbai Suburban — rated 4.9★ across 9,727+ reviews.
Every repair at Xigox — including HP Blue Screen Error fixes — is covered by a 90-day warranty. If the same problem recurs within 90 days, we repair it free of charge. Our warranty is provided in writing and applies to all repairs across Govandi and Mumbai MMR. We've been serving Mumbai Suburban district for over 15 years.
The cost to fix HP Blue Screen Error in Govandi varies by laptop model and severity. Xigox charges ₹350 for inspection — refunded if you proceed with the repair. A transparent written quote before any work begins. You're never charged until you approve the repair — no hidden fees, ever. Customers across Govandi (400043) enjoy priority same-day scheduling.
Xigox repairs HP Blue Screen Error on Apple, Dell, HP, Lenovo, Asus, Acer, MSI, Microsoft, Samsung and Toshiba, and more. Our engineers are trained on brand-specific procedures and we stock genuine-grade parts for the most common models, so most repairs in Govandi are completed the same day. Our service covers the full 400043 postal area in Govandi.

Still have questions?

Send us your question on WhatsApp or call — a technician will answer.

HP Laptop Repair in Govandi — Xigox

If you are looking for HP Laptop repair in Govandi that is not a brand service centre, this is it. Xigox has run an independent HP bench since 2011, and our technicians work on HP boards and firmware every day rather than treating them as an occasional job. More than 1,00,000 repairs and a 4.9-star average rating sit behind that.

We stock genuine HP parts and OEM-compatible components for every common Laptop fault — from screen replacements and battery swaps to logic board repairs and data recovery. Before any work begins, you receive a written cost estimate. Our ₹350 inspection fee is refunded if you proceed with the repair.

We actively serve the entire 400043 postal area within Mumbai Suburban district, ensuring same-day response for every repair request. ₹350 inspection fee (refunded if you proceed with repair). Located near Shivaji Nagar, our service coverage extends across Govandi and all surrounding localities. In addition to Govandi, we also provide doorstep repairs and free pickup for lab work for customers in Govandi East, Shivaji Nagar Govandi, Mankhurd and other nearby areas.

Straightforward HP jobs — battery, keyboard, screen, SSD or RAM — are done at your address in Govandi. Anything needing the microscope and hot-air station comes back to the lab, with free pickup and drop either way. We confirm within 15 minutes of booking and tell you honestly whether it is a same-day fix.

Every HP repair at Xigox is covered by a 90-day warranty on all parts and labour. If the same fault recurs within the warranty period, we fix it at no charge. Our after-repair WhatsApp support means we are always available to answer questions about your HP Laptop.

Service Hours

Monday – Sunday · 9 AM – 9 PM

Open on all public holidays

Service Area

Govandi & surrounding Mumbai areas

Doorstep repairs + free pickup for lab work

Contact Us

+91 74997 61196

info@xigox.com

Our Guarantee

90-day warranty on all repairs

Free re-repair if same fault recurs

Product lines

HP Series We Cover for Laptop Screen Flickering repair in Govandi

Our bench covers 17 distinct HP series. That matters for Laptop Screen Flickering repair, because a Compaq and a DeskJet are stripped down very differently. We regularly take in Compaq, DeskJet, EliteBook and EliteDesk, along with EliteOne, Envy, LaserJet and Neverstop units for Laptop Screen Flickering repair in Govandi. Specific HP models on our current service list include HP EliteBook, HP Envy, HP Omen and HP Pavilion. If your HP model is not listed, it is almost certainly still covered — send us the model number on the base sticker and we will confirm parts availability before you book.

  • Compaq
  • DeskJet
  • EliteBook
  • EliteDesk
  • EliteOne
  • Envy
  • LaserJet
  • Neverstop
  • OfficeJet
  • Omen
  • Pavilion
  • ProBook
  • ProDesk
  • Smart Tank
  • Spectre
  • Victus
  • ZBook

HP ProBook

The HP ProBook is HP's mid-tier business laptop line — sitting below EliteBook, offering business features (security, manageability) at a more accessible price for small/medium businesses.

HP ProBook

  • HP ProBook 430 G8
  • HP ProBook 440 G9
  • HP ProBook 450 G8
  • HP ProBook 450 G9
  • HP ProBook 450 G10
  • HP ProBook 455 G9

HP Spectre

The HP Spectre is HP's flagship premium consumer laptop — distinctive gem-cut design, premium materials (often copper/black or nightfall black finishes), and HP's best available display and build quality.

HP Spectre

  • HP Spectre x360 13
  • HP Spectre x360 14
  • HP Spectre x360 16

HP EliteBook

The HP EliteBook is HP's premium business laptop line — competing with Dell Latitude and Lenovo ThinkPad, with a strong emphasis on security (fingerprint, IR camera, HP Sure Click/Sure View) and enterprise manageability.

Worth knowing for this repair: HP Sure View privacy screen option on several models — a physical privacy filter toggled on-screen, worth knowing about before assuming a "dim display" is a hardware fault.

HP EliteBook

  • HP EliteBook 830 G8
  • HP EliteBook 840 G8
  • HP EliteBook 840 G9
  • HP EliteBook 840 G10
  • HP EliteBook 850 G8
  • HP EliteBook 1040 G9

Laptop Screen Flickering Repair for All HP Models in Govandi

Select your specific HP model for a more targeted diagnosis page

Laptop Screen Flickering Repair for Other Brands in Govandi

We fix Laptop Screen Flickering across all major laptop and computer brands with the same quality and warranty

Areas, Roads & Landmarks We Cover in Govandi

Free pickup & drop across all these neighbourhoods

Localities & neighbourhoods

  • Chembur
  • Mankhurd
  • Deonar
  • Shivaji Nagar

Roads & highways

  • Eastern Express Highway
  • Sion Trombay Road

Landmarks & famous places

  • Govandi Station

HP Laptop Screen Flickering Repair — All Locations

Explore more services

More Repair & Tech Services Near Govandi

Same technicians · Free pickup · 90-day warranty across all services.

₹350 Inspection (refunded if you proceed with repair) · 1,00,000+ Repairs · 4.9 ★ · 90-Day Warranty

Fix Your HP Device's
Laptop Screen Flickering Today

₹350 Inspection (refunded if you proceed with repair) · Expert repair for Laptop Screen Flickering · 90-day warranty

Serving Govandi and all of Mumbai MMR · Open 9 AM – 9 PM daily

Comparison

Xigox vs Other HP Laptop Screen Flickering Shops in Govandi

What you get with Xigox in Govandi, side by side.

FeatureXigoxOther shops
Experienced Technicians Trained & VerifiedVaries; ask who will work on the device
Genuine / OEM Parts OEM-Quality PartsVaries; ask which part will be fitted
90-Day Warranty Written CertificateVaries; ask for the warranty in writing
Diagnosis / Inspection ₹350, credited to the repairVaries; ask what the diagnosis costs
Same-Day Turnaround Govandi — Most RepairsVaries; ask for a time in writing
Free Doorstep Pickup Govandi — FreeVaries; ask whether pickup is free
Transparent Pricing Written Quote FirstVaries; ask for a written quote first
Live WhatsApp Updates Real-time Repair StatusVaries; ask how you will get updates

Xigox charges ₹350 for inspection — credited to your repair cost if you go ahead.

HP Laptop Screen Flickering Repair in Govandi — Professional, Reliable, and Affordable

Tired of middlemen? Work with the actual repair team — Xigox. Grey-market display panels cause new faults within weeks — display issues that weren't there before. Xigox Govandi sources OEM-grade or manufacturer-equivalent panels only: factory-spec brightness, colour, and touch sensitivity — with a warranty that means something. For HP Laptop Screen Flickering Repair in Govandi specifically, Xigox follows this exact process from start to finish — free pickup, transparent written quote, genuine-grade parts, and a 90-day warranty on the completed HP Laptop Screen Flickering Repair.

What Govandi Customers Say About HP Laptop Screen Flickering Repair

Don't just take our word for it. Xigox has earned a 4.9-star rating from 9,727+ customer reviews from customers across Mumbai MMR. Customers frequently mention: no surprise charges, same-day completion, and OEM-grade replacements. What Govandi customers value most: "Same-day fix with genuine parts and clear communication throughout." Join the growing community of happy Xigox customers in Govandi.

Fixed-Quote Policy for HP Laptop Screen Flickering Repair

One of the most common complaints about repair shops in Govandi is hidden charges after the job is done. Xigox operates differently. Before any work begins, our technician provides a clear cost estimate covering parts and labour. There is zero ambiguity — the decision is entirely yours. The ₹350 diagnostic is credited 100% when you approve the repair.

Convenient Collection across Govandi

Navigating traffic in Govandi can be a nightmare. To solve this, Xigox offers a no-hassle doorstep logistics service for this repair. Simply share your Govandi address, and our secure courier will collect your HP directly from you. Once the repair is finished, we safely return it in protective packaging. Enjoy total convenience without leaving your desk.

How the HP Laptop Screen Flickering Repair Process Works

Arranging this job in Govandi is designed to be simple. First, message us at +91 74997 61196 sharing your issue. Then, our free pickup technician arrives at your Govandi address within the same day. Our engineers then perform a detailed diagnostic (₹350, refunded if you proceed). After your approval, this job is completed with OEM-grade parts — and your HP is delivered back to you. Total turnaround: 24-48 hours.

Trained Technicians for HP Laptop Screen Flickering Repair in Govandi

Not everyone in Govandi can handle complex this repair. Xigox's engineers possess years of experience specifically for HP hardware. Whether it's a minor fix or advanced component-level motherboard repair, we fix it properly right here for Govandi clients.

Pickup & Drop Across Govandi

We repair devices for homes, offices and colleges across Govandi book us with free pickup and drop. You get a written quote before any work, OEM-grade parts and a 90-day warranty, whether it is one laptop or an office fleet. When you choose Xigox for this job in Govandi, you get the same service and warranty as every other customer.

OS Recovery with HP Laptop Screen Flickering Repair in Govandi

Many HP problems trace back to software. Our team are equally skilled at diagnosing and fixing virus infections as hardware repair. Common software causes include: a corrupted Windows or macOS installation, a malware infection, blue screens, or boot sector errors. We reinstall and configure macOS cleanly and quickly, preserving your data wherever possible.

Rapid HP Laptop Screen Flickering Repair — Timeline

Curious how quickly Xigox can complete job in Govandi? Here's our typical timeline: Step 1 — message us and our pickup technician arrives at your Govandi address within 2 hours. Step 2 — our inspection identifies the exact fault. Next — you give the go-ahead via WhatsApp — completely your decision. Finally — this job is executed using genuine parts at our Virar West workshop, often same day. Then — your HP is delivered back to you fully tested.

Transparent Inspection in Govandi

Uncertain about the issue with your HP? Prior to starting any repair, Xigox performs a thorough diagnostic check. The ₹350 inspection fee, it is 100% refunded if you proceed with the repair. Our technicians in Govandi will show you the broken part in plain English so you can make an informed decision.

After-Repair Care for HP Laptop Screen Flickering Repair

Your job doesn't end when the HP is returned. The Xigox after-service team remains reachable 7 days a week, 9 AM–9 PM via WhatsApp or phone. Should any concern arise within 90 days of your job, simply contact us and a technician is dispatched at no cost. This commitment is why residents in Govandi return to Xigox.

Technology keeps your life running — keep it running with a trusted HP Laptop Screen Flickering Repair service. Xigox serves homes and offices across the region with transparent billing. Ready to get started? WhatsApp us at +91 74997 61196 for priority HP Laptop Screen Flickering Repair in Govandi.

Service area

HP Laptop Screen Flickering Repair in Govandi — Service Area & Coverage

Xigox provides hp laptop screen flickering repair across Govandi (PIN 400043), in the Mumbai Suburban district of Mumbai. Our doorstep pickup and on-site service cover the entire Govandi area and the neighbourhoods around it.

Localities we cover in Govandi: Chembur, Mankhurd, Deonar, Shivaji Nagar. Wherever you are in Govandi, we can collect your device from your door and bring it back after the repair.

Our technicians regularly serve homes, societies and offices around Govandi Station, and along Eastern Express Highway and Sion Trombay Road. If you're near any of these landmarks, same-day pickup for hp laptop screen flickering repair is almost always available.

HP Laptop Screen Flickering Repair near Govandi

We also serve these nearby areas — tap your locality for local hp laptop screen flickering repair:

HP Laptop Screen Flickering Repair price in Govandi — know it before you book

  1. 1Pick your device & issue
  2. 2See the real price range
  3. 3Free doorstep pickup in Govandi

4.9 from 9,727 customer reviews across all repairs · upfront pricing · 90-day warranty

Before you book: have your device model and a quick description of the issue ready — it speeds up your quote.

Nearest pickup point: Vikhroli West

~6.7 km from Govandi. With free doorstep pickup you don't need to travel — this is our nearest pickup point.

Book a repair

HP Laptop Screen Flickering Repair — Book Now

Free pickup · Genuine parts · 90-day warranty

Booking received

We'll call you within 1 hour to confirm your appointment and arrange doorstep pickup.

Inspection fee: ₹350

  • Credited to your total repair cost if you go ahead.
  • Still applies if the device can't be repaired or you decline the repair.

+91

Device type *

Inspection fee: ₹350

  • If you go ahead with the repair, the ₹350 is credited to your total repair cost.
  • If the device can't be repaired or you decide not to continue, the ₹350 inspection fee still applies.

Your details are used only to arrange this repair. By submitting, you agree to our Privacy Policy.

Call WhatsApp