I have a Droid x that I use to process credit cards at farmer's market with the $12 plan. It was work setting up the droidx as it needed to be rooted and then have droid wall and root keeper installed before using it with a square credit card reader. Still I get the message from Verizon every other day asking me to upgrade the software in my phone. Other Farmer's market vendor's want me too help them set up phones as this is much cheaper than a plan with a big carrier. It seems there must be a simpler way.
What phone is easier to set up? Is not expensive and is easy to find used? I would like to help my friends out in setting up phones to do credit card processing.
Square is just an app w/ the physical attachment. You don't need special "setup". You don't even need a rooted device. Any smart phone (android, iphone) will do. If using Android, make sure the OS version is 2.3 and up (Gingerbread or newer), which is about the majority of Android phones out there. We have an iphone 4 (not jail-broken) and Square works perfectly on it.
Droid wall however does require rooting. If the reason you are using Droid Wall is to limit the use of data for only Square app, then you can try turning off the data/3G and turn it on only when using Square. I don't have DW and that's how I manage data usage. Also turn off sync and background data to be safe.
I changed the title because "phones for farmers" was ridiculous and at best tangent to the actual issue you were looking to discuss.
Also some members felt you should keep this entire subject collected in one thread since it seems to be the crux of your continual questions and a very niche subject matter. I agree, so from here on out all any time you want to discuss the Square reader and anything to do with PP bump THIS thread instead of starting a new one.