Been bugging me ever since I inherited this phone off the other half(missus had it as a replacement but found it too masculine). I'm sure it used to be louder when she had it

Annoying for me as I work in a noisy workshop so no chance of hearing my mobile ring.
Anyway, is it usual that none of the ringtones(including my own MP3s) are not very loud? Wondering if mine could have some sort of fault or bug in the firmware.
Don't really understand too much with this phone but some info incase it helps:
v4.6.0.221 (platform 4.0.0.186)
cryptographic kernal v3.8.5.50a
branding version: 1.0.142.58
Could there be a firmware update that increases the phones volume or am I just stuck with it as is, oh and yes I have checked in profiles that volume is set to the loudest.