For those who are using iPhone and androids be careful ,their are some crypto mobile wallets on store that aren't popular or well knowned ,please do not use them ,some of this apps have keyloggers pre installed ,they will easily steal your backup phrase
Especially those named 'bitcoin wallet' like in the picture below, they are well rated and they are in different colors

Head to playstore or iOS store and type in just 'bitcoin wallet' you will see many fake bitcoin wallets popping up ,go for popular mobile wallets like coinomi ,trust ,enjin ,mycelium ,coinbase ,bitpay ,copay,bread ,jaxx or atomic wallet.
I always thought that the scammers would find a scheme, regardless of the degree of protection, in order to fool unknowing users. I would advise not to distribute the private key of the wallet anywhere else - only to METAMASK or MyEtherWallet, and then check the correctness of the site! Every day, due to inattention, cryptocurrency is lost from users' wallets!