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T-Mobile vs. Boost Mobile: iPhone 18 Pro Max for 1 line
For 1 line of iPhone 18 Pro Max over 36 months, Boost Mobile's Unlimited+ beats T-Mobile's Experience More by $1,326. The monthly plan price is the single biggest driver of that gap. Both sides are backed by confirmed plan pricing.
T-Mobile (24 months) and Boost Mobile (24 months) spread its device credit over fewer than 36 months, so the bill drops partway through.
T-Mobile
Experience More · Buy unlocked (Apple financing)
$130.26/mo per person, 1 line
$4,530–$4,689 over 36 months · $125.83–$130.26/mo household
$148.41/mo for 24 months, then $94.28/mo once the device is paid off.
- Provider fees unconfirmed
Resolves once T-Mobile's provider fees for your location are confirmed.
Boost Mobile
Unlimited+ · Buy unlocked (Apple financing)
vs. T-Mobile unlocked (Apple financing) over 36 months
$93.42/mo per person, 1 line
$3,060–$3,363 over 36 months · $85.00–$93.42/mo household
$111.43/mo for 24 months, then $57.30/mo once the device is paid off.
- Activation fee unconfirmed,
- Provider fees unconfirmed
Resolves once Boost Mobile's activation fee is confirmed and Boost Mobile's provider fees are confirmed.
Saves $2,257–$2,520 vs. your current bill over 36 months
Plus 1 new phone and setup: $1,260–$1,300, net of trade-in/resale credit.
Plan $50.00/mo + device $54.13/mo + $40.00 upfront − $38.97 cashback
iPhone 18 Pro Max paid over 24 months at 0% APR via Apple Card Monthly Installments, with 3% cashback credited once.
Sales tax on the device (varies by state, typically charged upfront on full MSRP) is not included in the totals above.
Boost Mobile's per-line activation fee isn't confirmed — shown here as $40.00 (worst case, based on the highest verified activation fee in this dataset); best case assumes $0.
We don't have a resale value for a iPhone 16 in this condition yet, so it counts as $0 here.
Data verified September 10, 2026.
T-Mobile's provider fee: $4.49/line + $0.36–$4.79/line surcharge that varies by location. Boost Mobile's provider fee: provider fee not yet confirmed.
Frequently asked
Which is cheaper for 1 line of iPhone 18 Pro Max: T-Mobile or Boost Mobile?
Boost Mobile's Unlimited+ costs $3,363 over 36 months for 1 line of iPhone 18 Pro Max, $1,326 less than T-Mobile's Experience More at $4,689.
What's the effective monthly cost of iPhone 18 Pro Max on T-Mobile vs. Boost Mobile?
T-Mobile works out to $130.26/mo and Boost Mobile to $93.42/mo, each the 36-month total divided evenly by 36 — not necessarily the bill you'd see in any single month.
Are these T-Mobile and Boost Mobile prices confirmed?
T-Mobile's total is a computed worst/best estimate, pending a promo or fee confirmation, and Boost Mobile's is a computed worst/best estimate, pending a promo or fee confirmation. See the confidence badge on each card, and our methodology page, for what that means.