An iPhone that restarts approximately every 3 minutes is usually experiencing a communication failure with one of its essential internal sensors.
The most common causes are:
Charging Port Flex Cable Failure
One of the most common causes.
If a sensor or communication line in the charging port assembly is damaged, the phone may restart every 3 minutes.
This can happen after liquid damage, impact, or a previous repair.
Proximity Sensor / Front Sensor Flex Failure
Damage to the front sensor flex cable can also cause this issue.
This sometimes occurs after a screen replacement or physical damage.
Logic Board Failure
If the sensors and related parts are working properly but the motherboard cannot receive or process the sensor signals, the issue may be on the logic board.
Liquid damage, corrosion, impact, or damaged board-level communication lines can cause this.
The exact cause can usually be identified by checking the panic-full log under:
If the log shows “missing sensor(s)”, the sensor code can help identify which component is causing the restart.
Repair time may vary depending on the cause of the issue. If the problem is related to the proximity sensor, the repair usually takes about 20 minutes. If it is the charging port, it typically takes about 1 hour. If the issue is with the logic board, the repair may take approximately 1–3 days depending on the condition.
We recommend visiting our shop for an accurate diagnosis.
Thank you for your inquiry.
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The most common causes are:
Charging Port Flex Cable Failure
One of the most common causes.
If a sensor or communication line in the charging port assembly is damaged, the phone may restart every 3 minutes.
This can happen after liquid damage, impact, or a previous repair.
Proximity Sensor / Front Sensor Flex Failure
Damage to the front sensor flex cable can also cause this issue.
This sometimes occurs after a screen replacement or physical damage.
Logic Board Failure
If the sensors and related parts are working properly but the motherboard cannot receive or process the sensor signals, the issue may be on the logic board.
Liquid damage, corrosion, impact, or damaged board-level communication lines can cause this.
The exact cause can usually be identified by checking the panic-full log under:
Settings → Privacy & Security → Analytics & Improvements → Analytics Data
If the log shows “missing sensor(s)”, the sensor code can help identify which component is causing the restart.
Repair time may vary depending on the cause of the issue. If the problem is related to the proximity sensor, the repair usually takes about 20 minutes. If it is the charging port, it typically takes about 1 hour. If the issue is with the logic board, the repair may take approximately 1–3 days depending on the condition.
We recommend visiting our shop for an accurate diagnosis.
Thank you for your inquiry.