Receive up to $504 promo credit ($180 w/Welcome Unlimited, $360 w/ 5G Start, or $504 w/5G Do More, 5G Play More, 5G Get More or One Unlimited for iPhone plan (Welcome Unlimited and One Unlimited for iPhone plans can't be mixed w/other Unlimited plans; all lines on the account req'd on respective plans)) when you add a new smartphone line with your own 4G/5G smartphone on an eligible postpaid plan between 2/10/23 and 4/5/23. Promo credit applied over 36 months; promo credits end if eligibility requirements are no longer met.
$699.99 (128 GB only) device payment purchase or full retail purchase w/ new smartphone line on One Unlimited for iPhone (all lines on account req'd on plan), 5G Start, 5G Do More, 5G Play More or 5G Get More plan req'd. Less $699.99 promo credit applied over 36 mos.; promo credit ends if eligibility req’s are no longer met; 0% APR.
I am rarely home so I want to get the rock bottom rate. If I do use my home phone it would be for a local call.
It is just about impossible to get the phone bill for a wireline below about $18/month. Generally there are about $8 in various mandated charges like 911, and Federal Subscriber Line charges. Basic wireline service (measured zero) is about $10 a month in most markets as long as you don't buy inside line/wire maintenance.
The lowest cost is likely to be a prepaid cell phone plan. If you buy $100 credit, that will usually keep the plan alive for a year, or until you have gone through $100 in cell phone charges at the prepaid rate. If you rarely make or receive calls, the $100 may be more than a year of calls.
Verizon, AT&T and T-Mobile all offer similar prepaid plans, so if you live in an area with good wireless service, that may be attractive.