What is that small button battery by the earpiece?
I took apart the LCD screen and saw a button battery next to the earpiece. Do I need to replace the battery? The phone is 7 years old so the battery must be low.
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That could be your RTC battery. Post an image with your question so we can make sure. This guide Ajout d'images à une réponse existante will show you how to add images.
par oldturkey03
You can see the small battery in the upper left corner of Steps 6 and 7 of the following repair guide:
Motorola Razr V3 LCD Screens and Call Speaker Replacement
par johnplim
Yes, that is the RTC battery. Since you already have your phone open, I would most certainly replace it as well.
par oldturkey03