Thank you for the reply. I have had it since it was released, so I am sure the phone has not been opened. It's been a year and, I have not serviced it yet because it was running fine. I just noticed the gap, and was suspecting a battery issue. The member's app tracked it down and advised me to visit the service centre. What could possibly cause the battery to swell? The charger I use could not be the problem.
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