The Samsung Keystone 2 increases the durability of its battery with a super long standby time of up to 30 days. Plus it is equipped with various useful features - FM radio, a unit converter which converts currency, length, weight, volume, area, and temperature). The phone also includes a calculator and MP3 ringtones for full and nice ringtones that alert you to incoming calls and messages. This phone was released in 2012 and is also identifiable by the model number QT-E1205Q.
Hi @orcabr,
Try removing the battery from the phone and then hold the Power button operated for about 30 seconds then release it.
Reinsert the battery and check what happens.
Does it also do this when the charger is connected to the phone?
由 jayeff 完成的
Yes sometimes it does
由 Orca Br 完成的
@jayeff thank you for the the advice but unfortunately it didn't work
由 Orca Br 完成的