Initial testing indicates the battery works well

The battery is good for its size

I think the 3G may be why I get good battery life out of it, so I've not pressed AT&T to get 4G on the phone since I put a higher priority on battery life than data speed

‘smallest smartphone’ with: better quality parts all around, Android 8 (Oreo) and hopefully thinner with better battery.

But therein lies the biggest problem: There are several utility apps pre-installed which drain the battery very quickly

I almost always have a very strong signal, so that plays into the good battery life for me

Battery is as bad as you hear though

Would have given it 5 stars but for abysmal battery life in this iteration.

Well done Unihertz.post-use edit: I have to take it down a star because the battery is so brutal, near unusable.- the wireless connections (wifi, 4g, bluetooth, location) drain the battery down o near impossible use

However there are enough inconveniences with the phone that makes it unusable as my daily driver.- Poor battery life - Advertised as 3 days, which may be theoretically possible if you don't use the phone much and have all of the battery saving features turned on

Battery almost dead

sure every app is optimized from the settings, a few aren't by default-Bluetooth, for whatever reason, absolutely murders the battery, so for my speakers I stick to a cable or Spotify Connect

Perhaps with a 720p screen and better battery

Battery may be bad

Very good Camera and decent battery

At 10 hours in standby (sitting in one place) only, the battery fell to 92%

Bought on German amazon, despite I knew that 50% of reviews was negative...for a first 3 months it was very nice surprised, all worked great, smooth, battery last 1, sometimes 1,5 day, but..... in april received some OS update and since it, phone drains batt, being warm and survive 4 hours alive

The Mighty has no screen and still has horrific battery life

only though)-design is simple, smooth, and aesthetically pleasingThe bads:-TERRIBLE TERRIBLE BATTERY LIFE

The base keyboard is not really good enough, and the GPS is inaccurate but you won't really use it anyway because it kills the battery too fast

The battery is very weak, the company should improve the quality and capacity of battery.

Battery drains in no time

Terrible battery life, will die in 5 hours idling and lie to you saying that it estimates 12 hours.

such a useless phone with the worst battery life

But everything is working and the battery seems pretty good (without a SIM it's hard to tell because the phone isn't monitoring anything constantly)

The battery seems reasonable enough

The battery is awful

Awesome size, but as everyone else says the terrible battery makes it useless.

Would have liked it better but for the touch/typing issues and the pathetic battery life- even standby time without wifi or Bluetooth is about 4 to 6 hours, with usage even less.

Bad battery life.

However, as others have stated, the battery is a trash

Everything fine except that I felt the battery is discharging fast

Also, the battery is replaceable

Thank you!!!!only battery for one day

then battery gets hot, and display on phone says disconnect battery.-------------------------------------------------------------------------------------------------------------------------------------------------Got the phone today

The phone would be perfect for me if it had a decent battery life

I don't know if the battery have a fault I put the phone to charge all night into the next day and the phone still didn't come on

it's 480p display, poor battery life, and useless camera; but I still think I would have kept the phone had Android auto worked and it had a battery life even remotely close to what is being advertised