Inrf52810 AT module Communicating with Android phone

[jerry]

I have a Raytac module which contains a nrf52810 AT module in it hooked up to a micro via Uart, so i can send and receive AT commands and data. I'm trying to connect to my Motorola Droid android phone. When I use the phone settings to try and connect I get a rejected by module message, when I use the nrfConnect app I can connect but says not bonded. I just need to be able to send and receive bytes successfully. What do I need to do. Do I have to send the module some AT setup commands first? I know there is probably tons of documentation available on this, but that's the problem, there's so much information its hard to find sometimes.  Also, Is there a simple app that I can use on the phone just to send and receive bytes of data?
Thanks Jerry

[jerry]

Edvin- Thanks so much again! The site you pointed me to gives an error 404, but I suppose it's now on Github? I see the UART APP limits the input and output string size, is that just the program limitation? I need to send and receive packets of up to 256 bytes. Is using and modifying the UART app codes the best way of data exchange for a hand held product? Is that what most people develop with? I'm new to Bluetooth. A 3d party company will be writing the app, I just need to communicate with it from my side, All data will be ascii2 characters, such as Hex files.

[Edvin]

Ops. Yes. It does. I am sorry. Some of the links are still broken after we moved to our new webpage. The link that I sent, infocenter, is not maintained anymore, but I couldn't find the link in our new nordicsemi.com/DocLib.

Either way, the nRF Uart app's source code is found on github.com/nordicplayground:

https://github.com/NordicPlayground/Android-nRF-UART

I will let our web admin know about the missing documentation on our new websites. 

BR,

Edvin