[drivers137]

I would like to know what the smartphone that has the highest battery life but it's good. Have good specifications, processador memory.
To last two days or more of continuous use.

[gipper69]

You can also use an extended battery for a phone with a removable battery. For example, a LG v10 can be kitted with a 6600 ma battery and a big butt back cover. Makes the phone heavier, but does give you extended capacity.

[Indecyfer]

I use a Gionee M5, and the battery life is spectacular. The phone is quite heavy though. About 200g.

[MikeyBugs95]

I think I recently saw a phone on eBay with a 10,000 mAh battery. I'm not sure how much truth to that there is.

[Tenos]

I agree with Indecyfer. Gionee brand is offering smartphones with pretty big batteries. You could look at one because they're building reliable phones.

[datum9]

Definitely this one:

Energizer 18K Pop Smartphone Features an 18,000mAh Battery

The Energizer 18K Pop Smartphone Features an 18,000mAh Battery, 2.5x Thicker than iPhone X

[Altema22]

Definitely this one:

Energizer 18K Pop Smartphone Features an 18,000mAh Battery

The Energizer 18K Pop Smartphone Features an 18,000mAh Battery, 2.5x Thicker than iPhone X

Yes, that's the one! Although I think it did not gain enough interest for them to actually make it.
Perhaps we should focus on "normal" phones that don't look like a powerbank with a screen!

It's too bad most review testing is either non realistic, like a looped video, or is done without the phone being able to optimize itself. An example is the U12+ which had so-so battery life out of the box, but after the update and a chance to optimize itself, is really good. I just did 49 hours on one charge, and I could have gone 54 hours (screen shot below)

[flica66]

Yes, Energizer 18K Pop has 18,000mAh Battery.
it's like power Bank, it takes too much time to charge full charge.
I think any smartphone has 5000mAh battery back-up is the best.

[Mike Dee]

Definitely this one:

Energizer 18K Pop Smartphone Features an 18,000mAh Battery

The Energizer 18K Pop Smartphone Features an 18,000mAh Battery, 2.5x Thicker than iPhone X

I can finally stop carrying my car battery with me.

[datum9]

LG V20 comes with extended batteries up to 10,500 mAh.

[mustang7757]

I can finally stop carrying my car battery with me.

[Nick_Hudson]

Hahaha

[keifferr]

A smartphone that has a 5000mAh battery with fast charging capability is good enough for me.

[claudiafields]

As I know, Xiaomi smartphones have longer battery life and as proof, I can mention Xiaomi 3S Pro here though it's a bit older than its kind of other models. I hope it will be useful for checking a Xiaomi model that fits your requirements.

[Golurk]

I’d say Huawei phones like the Mate 20/P30 Pro (and the Samsung S/N10+) have pretty good battery lives, probably the best in the Android world.

[vancrideout]

Is there a way to upgrade it's Ram?

[B. Diddy]

Welcome to Android Central! There's no way to upgrade RAM on a mobile phone. It's not like a PC with extra RAM slots.