A:AnswerKeypad will pull out when you are about to start typing like you would for a laptop/computer. Having a Bluetooth keyboard is much easier if you are doing extensive typing. I have one and typically can leave my laptop at home for work.
A:AnswerAs long as your iPad Air 2 is running the latest iPadOS yes you would be able to do so keep in mind if you’re running an outdated OS and you’re apps have not been updated by their developers they will not be carried over or they will but they will no longer work
A:AnswerYes it will work. I bought the unlocked (Cellular) iPad and I was able to purchase a Monthly data pack from T-Mobile using eSIM and I installed my SIM card from Verizon. Both works great. AT&T wouldn't be any different and should work the same.
A:AnswerI just bought the unlocked iPad Pro because it was $200 off at Best Buy. If you are talking about the AT&T model from AT&T, they might not have the same deal that Best Buy is offering. Both would work with AT&T cellular plan. I use Verizon and I was able to install my SIM card in the unlocked model and it worked great. I also have a prepaid monthly data plan through T-Mobile and they both work great together.
A:AnswerUnfortunately, no. The only port is 1 USB-C for charging or connecting external devices. You could probably purchase a USB-C dongle that allowed you to use a regular headphone jack. Otherwise, you are limited to using bluetooth headphones.
A:AnswerI tend to stay away fro acrobat reader on the iPad. There are bountiful other PDF applications that work better....even viewing in Safari works great.
A:AnswerWhat Adobe software are you asking about? I have Adobe Acrobat, Photoshop and Lightroom for iPad both installed on my 12.9" iPad Pro. They all work great with iOS 13. Go into the Apple App Store to see what other iPad versions Adobe has available.