My phone is working fine and there has been no issues after software update ... kindly get your phone checked at the service center if it is still under warranty...
I don't think battery should be an issue for the software update as samsung device senses the battery status before downloading any update... so it does not accept any update in battery is 20% or less ...
Thankfully Samsung has heard us and added Arabic and many other languages to the live transcribe ... it is a big relief as many of our customers prefer to talk in their native languages and arabic is one of them ...
Live translate is available in other models also ... but they still miss the language support ... feature is of no use if they do not support majorly used languages ...