What if BOSCH electric wrench is not charged?
If you have enough power, try getting into the engineering mode, cleaning the cache, and then restarting. Clean cache method: mobile phone shutdown, while holding the power button with the volume reduction key, enter the project mode, through the volume keys to select the option to clean up the cache, the system will automatically clean cache. After you clean up the cache, select restart to see if you can boot properly.
If the phone is now out of power, you need to use the original charger for 30 minutes, then boot to try.
If you can not enter the project mode, it is recommended that you bring your mobile phone, warranty card and invoice to the local customer service center, and check with the staff to check the mobile phone.
