last month i was using my iphone fine, i get through the day with probably around 30% left and now, it seems everytime i put it to sleep, it drains faster than when i have it on. maybe somebody can help me diagnose this. when i wake the iphone up via home button or power button, it sometime takes a while, up to 6 or 7 second when before it wakes up instantly. and another thing is after the 6 or 7 wait, the iphone can't connect to my wifi, it says the wifi doesnt work or something. it used to last me around 36 hour for my light use, now it lasts around 8 hours. maybe it's something in my setting? or apps? btw, it's jailbroken. i jailbroken it since the day i bought it.