400 vs Poco X7 5G

Phone 1

Phone 2

Winner

Honor 400

Lifespan decides this one: the 400 is supported until May 2031 at $5.92 per month of safe use, while the Poco X7 5G runs out in Jan 2029 ($7.47/month). On a which-lasts-longer question, that's not a tie — it's the whole answer.

Value Score: 400 76 · Poco X7 5G 75 — methodology

The lifespan decider

When specs are close, support length decides it — this is what each phone costs per month of safe use.

Honor 400 $350

Safe to buy$5.92/mo

2025◆ Buy-by May 20292031

Xiaomi Poco X7 5G $230

Buy with care$7.47/mo

2025◆ Buy-by Jan 20272029

Category by category

Display

400 80Poco X7 5G 80

Both displays are effectively the same class.

Performance

400 64Poco X7 5G 58

The 400's Qualcomm Snapdragon 7 Gen 3 (4nm) is simply the faster chip.

Camera

400 72Poco X7 5G 67

The 400 has the stronger camera system — same lens count, higher-grade sensors.

Battery

400 86Poco X7 5G 90

5,500mAh vs 5,300mAh — the Poco X7 5G lasts longer between charges.

Software longevity

400 70Poco X7 5G 37

The 400 is supported until May 2031 — 28 months longer than the Poco X7 5G.

Value

400 76Poco X7 5G 75

Pound for pound, these two are equally good deals.

Full spec table

Spec	400	Poco X7 5G
Price (street)	$350	$230
Display	6.55-inch AMOLED, 1.5K, 120Hz, 5000 nits peak	6.67-inch AMOLED, 1.5K (446 ppi), 120Hz, 3000 nits peak, Gorilla Glass Victus 2
Chipset	Qualcomm Snapdragon 7 Gen 3 (4nm)	MediaTek Dimensity 7300 Ultra (4nm)
RAM	8GB/12GB	8GB/12GB
Storage	256GB/512GB	128GB/256GB/512GB
Battery	5,300 mAh	5,500 mAh
Charging	66W wired (5300mAh EU model), 5W reverse wired	45W wired
Rear cameras	200MP main, 12MP ultra-wide	50MP main, 8MP ultra-wide, 2MP macro
Dimensions	156.5 × 74.6 × 7.3 mm	162.3 × 74.4 × 8.4 mm
Weight	184 g	190 g
Water resistance	IP65/IP66 (market dependent)	IP68 (also IP69)
Supported until	May 2031	Jan 2029

400 full verdict →Poco X7 5G full verdict →Longevity master board →

Scores and verdicts are computed from our verified database — see exactly how. Specs from manufacturer documentation; prices reflect major US retailers.