Strength of vibrate when typing seems to fluctuate

[ma100]

I have vibrate set for when using the keyboard so that it vibrates when typing, and I have it on maximum strength...but every so often, the vibrate seems to change and it seems to be less strong even though I haven't changed the vibration settings.

Does anyone else have this problem?

 

[lucianus_luciferus]

it may depend on how fast you type or how long you keep your fingers on the letters... dont know
do you have a case on your phone?

 

[ma100]

I do, yes, but vibrate has been pretty good on it with case on and then every so often it just seems to be weaker. No big deal, I find the vibrate helpful and wondered if anyone else had the same issue...