[charlesxy]

I am thinking of upgrading from S3.

I wanted to go with the S5, but my provider does not currently have it in stock.

They do have an J3 , J7, and S7.

I see that there is quite a price disparity between the J series and the S series.

Does this mean that the J series is of low quality.

My main concern is the battery life and that I am able to communicate effectively without dropped calls or very slow internet/GPS service.

Thank you.

[Golfdriver97]

The J7 has a smaller internal storage, less RAM, same size battery, but bigger screen (may affect battery life), running 5.1 vs. 6.0, and an older CPU.

[chanchan05]

The J7 is cheaper, hence it has less software features, as well as it's hardware is of lower standards. I wouldn't say quality. They're as durable as what Samsung factory standards comply to.

Here's a more direct comparison:
Samsung Galaxy S7 vs. Samsung Galaxy J7 (2016) vs. Samsung Galaxy J3 (2016) - GSMArena.com

[charlesxy]

Thanks..perhaps it's best to wait and see if a new battery for S3 will allow me more time with that phone. Then I can possibly upgrade to the S7 once there is a discount or dip in the price.