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Troubleshooting

Diagnostic guides that start with the most likely cause and work down, so you spend the least time possible on the fixes that rarely help.

16 guides

A cell phone tower against a blue sky
FeaturedTroubleshooting

Emergency calls only

Phone says emergency calls only? It means your carrier is not accepting your line. Try these 8 fixes for iPhone and Android before you call your carrier.

7 min read
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A cell phone tower with three antennas on top
Troubleshooting

All circuits are busy

Hearing all circuits are busy on a cell phone call? Learn what it means, how to tell if it is your carrier or theirs, and how to get your call through.

6 min read
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Two iPhones side by side on a gray background
Troubleshooting

Straight Talk IMEI invalid

Straight Talk says your IMEI is invalid or the phone can’t be activated? Check the number, the compatibility tool, the carrier lock and the blocked status.

7 min read
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The Verizon logo displayed on an iPhone
Troubleshooting

Verizon verification code

Verizon not sending verification code texts for logins and apps? Check blocked short codes, spam filtering, your plan blocks and port delays, then call Verizon.

6 min read
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Silver iphone 6 on white surface
Troubleshooting

Cracked phone screen

Can you use a phone with a cracked screen? Yes, briefly, but cracks spread and let in water. Learn the risks, how to protect it now and when to repair.

6 min read
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Sim card
Troubleshooting

SIM card locked (PUK code)

SIM card locked and asking for a PUK code? Learn what SIM PIN and PUK mean, how to get your PUK from your carrier and how to fix a blocked SIM.

6 min read
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A close up of a car's radio screen
Troubleshooting

Bluetooth won’t connect to car

Phone Bluetooth won’t connect to your car? Forget and re-pair it on both sides, clear old devices from the car, check audio settings and try 6 more fixes.

6 min read
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A person taking a picture with a cell phone
Troubleshooting

Phone camera not working

Phone camera showing a black screen or not opening? Close the app, switch lenses, check permissions and storage, restart and try 4 more fixes.

6 min read
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Two phones on white table
Troubleshooting

Phone charging slowly

Phone charging slowly? Use a stronger wall charger and good cable, clean the port, keep it cool and check settings that cap charging on iPhone and Android.

6 min read
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A vintage silver microphone with blue accents against a soft purple background
Troubleshooting

Phone microphone not working

People can’t hear you on calls? Test your phone microphone with a voice memo, disconnect Bluetooth, check permissions, clean the mic holes and try 5 more fixes.

6 min read
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A person taking a picture of a field with a cell phone
Troubleshooting

Phone says SOS

Your phone says SOS or SOS only when it loses your carrier but can still call 911. Learn why it happens and try 8 fixes for iPhone and Android to get service.

6 min read
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Beats speaker and smartphone on a wooden table
Troubleshooting

Phone speaker not working

Phone speaker not working? Check volume, Silent mode, Bluetooth and Do Not Disturb, clean the speaker safely and try 4 more fixes on iPhone or Android.

6 min read
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A cell phone on a car dashboard
Troubleshooting

Phone got wet

Phone got wet? Turn it off, dry the outside, shake water from the ports and let it air dry for a day. Why rice makes it worse and when to get a repair.

6 min read
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