Full test of the HTC One M8 on T-Mobile. I started the day at 12:15pm at 100% in my home town of Rocky Mount. I showed the phone no mercy and ran it with no power saving features at all. I took about 24 photos, 2 videos and checked email's and more. Service was 4G in Rocky Mount almost every where. I went to a grocery store and had no service, no data inside the store. I had t-mobile years ago and expected this and of course the store has no wifi so no hope of that. I had to wait till I got in the parking lot to call my wife and see if she needed anything. While sitting around eating hotdogs and hamburgers my wife and I made plans for birthdays on our calenders, and shared photos with one another. I looked at facebook and a few videos recommended on facebook. I fixed a problem with google voice on my phone and just pretty much used it without a care in the world. On the way home I bluetoothed into the car to listen to mp3's on my phone for about a solid hour. When I got home I cooked supper for about 2 hours and watched 2 almost 3 episodes of big bang theory on my phone. Finally we went swimming and I took a few pool shots that didn't come out to hot so I dumped them. We came home finished dinner and I downloaded an app or 2 and finished the 3rd episode of big bang. My phone lasted from 12:15pm until 10:25pm at night with no problems or slow downs in sight. I'm amazed at how poweful the phone is and how well the battery handles.
Pros: fast, works with no hesitation at all, takes very fast photos, takes very good photos, neat photo features, front facing camera is very nice, rear camera despite low MP takes very impressive photos, battery life is amazing, wifi works better than on my iphone 5 (no youtube buffering, no delays on downloads, make calls over wifi, Cell phone and cell data shut off completely in a reliable wifi connection and you lose nothing in the way of speed for it, touch screen responds well, htc sense software easy to use and has a very slight learning curve but within less than 2 days I've almost got it all figured out, very sturdy (I dropped it on the screen and got 0 damage from a height of 5 feet off a porch on concrete), very very loud and nice sounding speakers( also built into the front both top and bottom of the screen so no covering the speaker by accident), Shut's on and off very fast, has a micro sd port but you already have 32gb of internal storage so not sure why, millions of apps in the store and most are free, HTC gives you 50gb of extra space on google drive and will replace your screen 6 months from purchase if you manage to crack it somehow.
Cons: heats up(the aluminum body of the phone gets hot when playing intensive games or watch movies on it, but nothing to the point of burning your hand), because it's not a flagship phone stores carry no cases for this phone and most cases at t-mobile suck, the body is to slick and easy to lose grip on it, android even with htc sense still has a huge learning curve compared to apple, having to remember that android uses your gmail account for contacts had to go through an afternoon of importing icloud contacts to gmail then merging them and deleting duplicates, no headphone included with the phone (really htc how cheap are you to not include one pair), sometimes the screen doesn't want to wake up you have to constantly tap towards the bottom of the screen to get it to wake up, the power button is to high up on the phone and should be moved to the bottom front or the right of the screen, no removable battery(batteries in phones are shown to only handle 300 complete 100% charges so that means the phone won't last about 3 years before i'll need to either get a new phone or pay to have it opened up and have a new battery put in, also with the heat issues with the phone the battery won't last 3 years, small complaint considering i'll get a new phone in 6 months to a year), that's all I can complain about.
I so far am very satisfied with the phone and as time goes on i'll do another review.