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I have been creating accounts with people almost exclusively on phones, so my recommendation is that, chrome browser, x or gmail (mainly gmail)

As for last week, I tried onboarding someone with his mobile device on chrome through his X, but after he put his x username and password in logging in, it just remain on X. No further move in confirmation..

But when you sign up with X (which you should already be signed in before trying to create the account) to sign in you need to just use the X account and no username or passwords are asked

I will try it again. Thanks for a lot.. 🙏🏽🙏🏽🙏🏽