Is there any Mobile Wallet like Jaxx, but with testnet(like, kovan, ropsten)? Please do suggest me, I am workin on the cryto coin transfer application.
Sure, you need to know the Trust Wallet https://trustwalletapp.com/ supports ropsten, erc20, rinkebin, etc
Coinbase Wallet (https://wallet.coinbase.com/) does support this. Go to settings -> advanced -> active network