Everytime my phone battery dies or I turn the phone off or I pop a fresh battery. All the data from my web is gone. I'll have to sign again on every site and I lose my browsing story. Its hey annoying, what can I do?
Sometimes that does happen, I used to see that happen on my arrive, not so much with my HD7 tho. It also used to happen with text messages on my arrive or any older sprint smartphone I had.
Try to do a soft reset. Hold power button for 10 sec (untill screen goes black) and let it boot up. Visit some sites and turn off the phone (press power button around 2 sec and pull down). Start it again and see if the history is still there.