my phone cannot acess celular data or make and receive calls.

Smilin-Brian wrote:

I believe that the iPhone 5S supports 4G LTE. 😉

No, it doesn’t. The iPhone 6 and later support 4G LTE. All older models only support GSM or CDMA (2G/3G)

See: https://www.att.com/idpassets/images/support/pdf/Devices-Working-on-ATT-Network.pdf

Specifically:

Apple

iPhone 6 and newer

Hello ~ Take a look here…

If you can't make or receive calls on your iPhone - Apple Support

~Katana-San~

See LTE bands in the following Apple documentation:

Click ▶︎ iPhone 5s - Technical Specifications.

Who is your carrier? In the US the 3G network used by the 5S has been shut down by AT&T and T-Mobile/Sprint, and Verizon will do likewise shortly (and already has shut it down in some areas).

I believe that the iPhone 5S supports 4G LTE. 😉

You are correct. However, it does not support VoLTE, which is now required by US carriers. So my original statement, that it won’t work on any US networks, is still true.

I owned an iPhone 5S on Verizon Wireless and it had the LTE indicator.

Have a nice day! 😂