Took a little bit longer for the battery to arrive.. Model is the M7 I have taken the phone apart really carefully, except the battery which was glued on stuck and took some effort. Unfortunately after putting everything precisely back together, the phone doesn't respond to anything anymore.. no boot, no lights, no charging, no nothing:( Used the right tools, checked all the connections (all look and feel good and no damage anywhere), I put everything back in again, still no sign of life..:( Charging doesn't do anything either.. I am pretty handy and neat, so can't imagine I made a mistake somewhere. Any suggestions?
Thanks Burnie! I am starting to go towards faulty battery as well. The phone started the reboot loop, after I put it in the charger. No software update whatsoever. Opened the back and checked the power button, it feels fine. When disconnecting after booting doesn't help, so i think it is a lack of power like you say or something very wrong with the motherboard or something. Just ordered a new batt and will install it tomorrow probably. Will let you know about the result, fingers crossed for now !