![]() To better diagnose whether the problem is related to your phone number and SIM card, you can contact wireless carrier support here for help. In case there is data loss, do remember to back up your important data in advance. You can try to enter and exit DFU mode here. DFU Restore iPhoneĭFU (Device Firmware Upgrade) mode can deeply restore your iPhone and fix some software issues such as device keeps making random calls by itself. Moreover, one-click to enter or exit recovery mode is available for free, also along with the ability to downgrade/upgrade iOS versions. Besides, it is compatible with all iOS versions, including the latest iOS 17 and recent iPhone 15 series. It is capable of fixing 150+ iOS/iPadOS issues in a lossless way, such as iPhone keeps dropping calls, no sound on call, call volume low after update, call forwarding not working, and so on. Joyoshare UltFix is particularly prominent. If you don't want to lose data while completely stopping iPhone making random calls, then a professional iOS system recovery is definitely your best bet. ![]() ![]() After the update has been completed, the issue of the random call should also be eliminated. Note: While this feature does not affect your personal data, it's wise to make a backup before resetting your device. When the confirmation alert appears, tap on the Reset All Settings again. ![]() Step 5: Enter your iPhone's passcode to initiate the reset process.Step 4: Select Reset and then Reset All Settings.Step 3: Scroll to the bottom of the page and tap Transfer or Reset iPhone. ![]()
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