I need to know how to stop my phone from saying it has an unsupported battery
If the installed battery is original equipment, the battery itself may be going bad ( wearing out ).
Remove and test battery for proper currents etc.
If battery passes all tests, than there may be internal device failure pertaining to the charging and discharging of the battery.
Visual examination of the battery - look for swelling, out of shape, curvature, etc. Does it lay flat ? Is it warm to the touch ? Do the contacts appear dis-colored or uneven color ?
If non-authentic battery, then battery technology / dis-charge and / or charge may not meet manufacturer specifications.
Continued use could cause ( further ) physical damage to the device.
Change battery with a known good battery, that meets manufacturer specs. If warning message continues, or if additional warnings appear, have the device and charger unit checked and/or serviced by an authorized service provider.
Kies update / reset may rectify this warning issue.
Please backup all important files, contacts, etc., prior to update / reset device, anticipate all information will be deleted from the device
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