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12 troubleshooting guides

Phones & tablets

Charging, startup, network, account, and display problems.

Phones & tablets4 min

iPhone not receiving texts

Carrier service, blocked contacts, iMessage routing, Focus filtering, SIM or eSIM state, storage, or message settings can prevent SMS or iMessage from arriving.

AppleOpen guide
Phones & tablets4 min

iPhone microphone not working

Blocked microphone openings, Bluetooth routing, app permissions, a case, software state, liquid, or hardware damage can make calls or recordings silent or muffled.

AppleOpen guide
Phones & tablets4 min

Android SIM not detected

The SIM or eSIM may be disabled, poorly seated, damaged, unprovisioned, carrier-locked, or affected by a phone radio or software problem.

AndroidOpen guide
Phones & tablets5 min

Android Bluetooth connected, no sound

When Android says a Bluetooth speaker, headset, or car is connected but music is silent, confirm volume on both devices, select the accessory as the media output, and enable Media audio in the saved-device settings before removing the pairing or resetting networks.

AndroidOpen guide
Phones & tablets4 min

Phone hot during charging

Fast charging, high ambient temperature, heavy use, a poor charger or cable, wireless charging losses, a damaged battery, or a stuck app can raise phone temperature.

SmartphoneOpen guide
Phones & tablets4 min

Phone camera black screen

The camera may be held by another app, blocked by permissions or privacy controls, frozen in software, covered physically, or damaged after impact or liquid exposure.

Smartphone cameraOpen guide
Phones & tablets4 min

Full signal but no mobile data

Signal bars can show radio coverage while mobile data is blocked by the plan, SIM provisioning, APN, roaming, data limit, outage, or phone network settings.

Mobile dataOpen guide