I more prefer to use Android for doing a Bitcoin transaction rather than iOS, because I don't even have a phone that can use iOS

I use my android all the time for bitcoin transactions and it's simply wonderful so far.

I am currently using an android smartphone combined with the blockchain.info app. Everything so far is working as it should, there is nothing to complain about

I am using the Copay app on Android and it works well.

I did all my transactions since I knew bitcoin using my smart phone with blockchain android wallet and mycelium wallet.
I use it because all what I have to do to make a transaction is scanning a QR code with the camera and press Send.

Your options on iPhone are limited, and there is no way to use cold storage. You can use Trezor with Mycelium on Android, works great. There is also the option of the Ledger Unplugged NFC card on Android.

I have Android but don't like to use it for such things because seems very complicate and even insecure. Maybe needed to put every time all the needed data to enter to your wallet and to do transactions but me seems not secure the smartphone itself to do such things. Have fear that hackers can hack the smartphones more easily and follow all your data or follow you and in the time of the enter learn everything. Maybe is an in vain fear but communicate through "the air" seems not secure to me.

i never have ios device,and second time choose android smartphone,and about bitcoin transaction,i definetly choose android for it,yes because i trust android for friendly use,and simple navigation. but i think both is same good as use for bitcoin transaction,because i choose online wllet and open it on web mobile,not app mobile.

So far I've only made transactions on my computer and never on my phone. Since I got an IOS that's what I'll be using if I am ever out and about and am able to use bitcoin as payment.