Got a Razr Maxx Phone that went from Android 3.0 to 4.0.4 ICS and now the battery drains faster, phone signal and 3G coverage has depleted horribly. I updated it yesterday. What can be done to fix it?
If you have a Rooted device you could try DZBox or ES Manager - they're both task manager applications that let you kill background processes thus freeing up RAM, cache space, and of course extending battery life.
Infact I don't think the ES Manager requires root, but it does enable more features.