Check your bank's daily debit limit; high-end phones may exceed it, requiring a temporary limit increase from your bank.
Some online retailers may require a "test deposit" (small pennies) to verify your account before you can complete the purchase. buy phones with checking account
Can you make a purchase online using checking account information? Check your bank's daily debit limit; high-end phones
If you'd like to find a specific or mobile carrier that supports checking account payments, I can look that up for you. Check your bank's daily debit limit
Services like Affirm or SmartPay allow you to finance a phone and make bi-weekly or monthly payments directly from your bank account.