I plugged my phone in last night around 10:30. While it was plugged in I played angrybirds for a bit. Fell asleep and woke up this morning at 7:00 and the phone was at 99%. I checked email and took a shower and around 7:20 it finally reached 100%. I have no idea how fast it got to 99% or how long it was at 99% but 7+ hours to reach full charge seems weird. Should I be concerned?