Is it possible to take input in HTML form and submit then store its backend data in mobile phone?

Answer 1

no you just can't only save data in mobile using html u can temporarily use data through JavaScript and take through pages but for that learn some more , for PC u can always easily install any local client soft but that would require you having PHP or similar lang for your purpose

Answer 2

yes, totally, deploy a client server model , for starters install wamp in ur windows PC, or xamp if other OS, it ll help u figure out how to set up back end , by making a local server in ur PC, Check it out