If you have a Nokia E51 (and others) and it turns off by itself, try updating the firmware. Apparently the new 4G towers will cause this with the old firmware. Affected models are E51, E71, N95 and 6120C. Try this before buying new batteries and phone.
The update is available on the Microsoft site. "Lumia & Nokia phones - These devices now come from Microsoft".
http://www.microsoft.com/en-au/mobile/support/
http://nds1.webapps.microsoft.com/files/support/global/phones/software/N...
I hope this info will save someone much time and money.
Dear AS!
Good morning!
These models are older than 8-10 years. There is no new firmware update available since 5-10 years for these models. The latest software versions are totally unfamiliar with the LTE system, 4G towers (called RNC), and of course the phone’s hardware is also not compatible with 4G. These types are no longer supported by Microsoft. If something goes wrong with this phones, do not buy a new battery, buy a new phone! :)
BR
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