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T-Mobile vs. Boost Mobile: iPhone 18 Pro Max for 5 lines
For 5 lines of iPhone 18 Pro Max over 36 months, Boost Mobile's Unlimited+ beats T-Mobile's Experience More by $3,211. 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)
$91.26/mo per person, 5 lines
$15,629–$16,426 over 36 months · $434.13–$456.28/mo household
$547.05/mo for 24 months, then $276.40/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
$73.42/mo per person, 5 lines
$11,701–$13,215 over 36 months · $325.02–$367.08/mo household
$457.15/mo for 24 months, then $186.50/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.
$1,080–$2,394 more than your current bill over 36 months — for 5 lines on Unlimited+
Plus 5 new phones and setup: $6,301–$6,501, net of trade-in/resale credit.
Plan $30.00/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.
Plan $30.00/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.
Plan $30.00/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.
Plan $30.00/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.
Plan $30.00/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 5 lines of iPhone 18 Pro Max: T-Mobile or Boost Mobile?
Boost Mobile's Unlimited+ costs $13,215 over 36 months for 5 lines of iPhone 18 Pro Max, $3,211 less than T-Mobile's Experience More at $16,426.
What's the effective monthly cost of iPhone 18 Pro Max on T-Mobile vs. Boost Mobile?
T-Mobile works out to $456.28/mo and Boost Mobile to $367.08/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.