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Sounds like your hammer device may have a hardware issue with the GSM antenna connection, which is separate from the WiFi and FM radio modules, so even though those features work fine, the GSM signal won’t be detected if the antenna is damaged, loose, or disconnected; usually, the GSM antenna is located near the bottom or side of the phone’s motherboard, often integrated into the back cover or as a flex cable, and you may need to carefully open the device or take it to a technician to check the antenna contacts, just like when troubleshooting apps such as nulls brawl where certain features might work while others fail due to missing files or connectivity problems, so repairing or replacing the antenna should restore proper mobile network function. |
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