How to raise pets on mobile phones?

Like the title, I have made a pink diamond recently and want to raise pets through my mobile phone, but I do n’t know how to do it, and if you use your mobile phone to raise it, then how to charge for mobile, please tell me in detail, please, please, please, please, please, please, please, please, please, please, please, please, please, please, please, please, please, please, please, please, please, please, please, please, please, please, please, please, please, please, please, please, please, please, please, please, please, please, please, please, please, please, please, please, please, please, please, please, please, please, please, please, please, please, please me, please me, I my my