i compare it with other iphones my iphone keyboard volume lower than others. I already try to increase it from setting and volume buttons but no results. it can be only lower. i did reset my iphone and even erased all data any way no change. Please help to resolve it.
iPhone XS Max, iOS 12
If the restart / reset does not solve your problem proceed to restore as new device.
http://support.apple.com/kb/HT1414
and move your data back in from backup.
How to back up your iPhone, iPad, and iPod touch - Apple Support
If that does not sort it, you can always take it in for assessment:
In or out of warranty you can get a free over the counter 'Apple Service Diagnostics' /assessment
Make an appointment for a "hardware issue"—
https://www.apple.com/retail/geniusbar/
or
outside USA
https://locate.apple.com/country
your other option is take it into your Carrier for over the counter assessment.
If the restart / reset does not solve your problem proceed to restore as new device.
http://support.apple.com/kb/HT1414
and move your data back in from backup.
How to back up your iPhone, iPad, and iPod touch - Apple Support
If that does not sort it, you can always take it in for assessment:
In or out of warranty you can get a free over the counter 'Apple Service Diagnostics' /assessment
Make an appointment for a "hardware issue"—
https://www.apple.com/retail/geniusbar/
or
outside USA
https://locate.apple.com/country
your other option is take it into your Carrier for over the counter assessment.
When typing message keyboard volume is low than other iphones.
