Yes. Many of them.
Over how long of a period?
Does the flip still work? In any case, turn it off. Turn off iPhone for 15 minutes. Then turn on and check.
You can also call the TF corp office 305 640-2000 x1029 8am-11:45 pm est 7 days better to call earlier.
Maybe they can help.
Make sure iOS is up to date.
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