my favorite android because coding is some difficult compare to ios.   integration development is also different , operating system is easy to use, in the designing also had some variations. it is free to download any apps.

bit coins more secure compare to other money transaction. we have to send and receiving money from one to another in the world. it is more secure process. bit coins transaction purpose we have to using wallets. it is more secure.

i think lionel messi and cristiano ronald is the best football players.