At home I have a nice strong signal and after 2 days I'm usually above 50% with average use.

I loved the extra battery time, but it killed my cell signal.

Erratic, weak signal

Moreover, the size of the battery itself seems to interfere with getting a clear wifi signal, for example in an area I never had trouble getting a signal I now find either no signal at all or a very weak signal at best.

Battery causes me to loose signals , its good for playing games, because the battery life is good , but not for phone use because it makes you loose the signal

I use all the features (3G, Wifi, Bluetooth), and the office I work in most days has lousy signal

In places where I used to get a weak signal, I now have none

Semi-significant signal drop

When I'm working in the city the signal is moderate and manageable, when I go home to the 'burbs where signal is already moderate with a normal battery, I lose signal almost entirely

No NFC (Google wallet)Signal loss

Moreover, the size of the battery itself seems to interfere with getting a clear wifi signal, for example in an area I never had trouble getting a signal I now find either no signal at all or a very weak signal at best.

I've since removed it and have a much better signal.

It does not have an antenna on the battery, I only mention this as I have noticed some reduced or no bars of service in areas where signal was weak.

Reduced signal reception for the phone in a weak signal area

The second you install it you start dropping calls and losing signal.

But for others with poor signal strength, it is something to consider

No signal issues.

I have been pleased so far with the battery i saw some reviews mentioning weaker signal strength on phones and their batteries

Due to it hampering the signal

I assume that in a major metro area like chicago where signal is all but impossible to loose it would do just fine but anywhere else you will have issues.

Wonderful battery, great long life but signal decrease like 20% at least but still being a good battery especially for go camping or places where no charge is possible.

I haven't had any of the other issues ie, degraded signal, slow charge, overheating, ect.

I would recommend this product if battery life is more important to you than a sleek, light phone, NFC, and perfect signal.

Wouldn't give it a 5 but lost signal in low signal areas where I had some before.

That means the signal is better than the ZeroLemon one

This is for Galaxy S4, didn't fit my S$ Active; My mistake

I love my Samsung S-4 phone, with one exception - a battery life

Usually their network is pretty stong in our area with comprehensive 4g service but with this battery I have low bars on 4

But the reception goes from 4G to 3G & my hot spot does not work.

The phone now works exactly as it is supposed to!If you remember Nokia phones from a decade ago that lasted a week on one charge, this battery will remind you of that long-forgotten feeling.

I didn't see any changes in performance of the device or anything that is not working as it was before start using the battery.

lots searching during the day with the screen as bright as can be for 3-4 hrs

Works great, only complaint is that the case doesn't hug my phone as tightly as I would like.

I do recommend this battery as I can go days without recharging.