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Realme 15x vs Sonim XP400

Realme 15x and Sonim XP400 are evenly matched - it comes down to what you need

Realme 15x

3.7/10

No price yet

Sonim XP400

3.7/10

No price yet

Best for

  • GamingSonim XP400
  • Keeping it for yearsRealme 15x

Head to head

  • Performance
    2.7
    3.6

    Sonim XP400 has the faster chip: Gen 2 against Mediatek Dimensity 6300.

  • Gaming
    3.0
    3.3
  • Longevity
    4.4
    2.6

    Realme 15x should get software updates for about 2 more years, against about 1.2 for Sonim XP400.

  • Connectivity
    4.6
    5.4

    Sonim XP400 has NFC, which Realme 15x lacks.

  • Extras
    3.2
    4.9

    Sonim XP400 has a fm radio; Realme 15x does not.

All specifications
Realme 15x
Sonim XP400
General
Condition
Available. Released 2025, October 01
Available. Released 2025, January 22
Model
RMX5250
–
Performance
CPU
Mediatek Dimensity 6300 (6 nm)
Qualcomm SM4450 Snapdragon 4 Gen 2 (4 nm)
GPU
Mali-G57 MC2
Adreno 613
Processor
–
Gen 2
Display
Resolution
720 x 1570 pixels, 19.5:9 ratio (~254 ppi density)
720 x 1612 pixels, 20:9 ratio (~272 ppi density)
Screen Protection
–
Corning Gorilla Glass Victus 2
Camera
Video Resolution
1080p@30fps
1080p@30fps
Battery and power
Charging Port
60W wired 6.5W reverse wired
–
Connectivity
2G
900 / 1800 / 1900
900 / 1800 / 1900
2G Bands
GSM 850 / 900 / 1800 / 1900
GSM 850 / 900 / 1800 / 1900
3G Bands
HSDPA 850 / 900 / 2100
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
4G Bands
1, 3, 5, 8, 28, 40, 41
1, 3, 5, 7, 8, 20, 26, 28, 32, 38, 40, 41, 42, 68, 71
5G Bands
1, 3, 5, 8, 28, 40, 41, 77, 78 SA/NSA
1, 3, 5, 7, 8, 20, 26, 28, 38, 40, 41, 71, 75, 77, 78 SA/NSA
Bluetooth
5.3, A2DP, LE
5.1, A2DP, LE
NFC
No
Yes
Network Technology
HSPA, LTE, 5G
HSPA, LTE, 5G
Ports
Headphone Jack
No
No
USB Type
USB Type-C 2.0, OTG
USB Type-C 3.1
Build and size
Dimensions
6.81 inches, 113.4 cm 2 (~87.6% screen-to-body ratio)
6.5 inches, 101.5 cm 2 (~76.5% screen-to-body ratio)
Features
FM Radio
No
FM radio
Questions people ask

Which is better, Realme 15x or Sonim XP400?

Realme 15x and Sonim XP400 are evenly matched - it comes down to what you need. Realme 15x wins on longevity; Sonim XP400 wins on performance, connectivity and extras.

Which is faster, Realme 15x or Sonim XP400?

Sonim XP400 has the faster chip: Gen 2 against Mediatek Dimensity 6300.

Which will last more years, Realme 15x or Sonim XP400?

Realme 15x should get software updates for about 2 more years, against about 1.2 for Sonim XP400.

Which connects better, Realme 15x or Sonim XP400?

Sonim XP400 has NFC, which Realme 15x lacks.

Which has more extras, Realme 15x or Sonim XP400?

Sonim XP400 has a fm radio; Realme 15x does not.

Which is better for gaming, Realme 15x or Sonim XP400?

Sonim XP400 scores higher for gaming.

Which is better for keeping it for years, Realme 15x or Sonim XP400?

Realme 15x scores higher for keeping it for years.

Which is newer, Realme 15x or Sonim XP400?

Realme 15x is the newer of the two, released October 2025.

Scores are out of 10 against products released in the last two years, worked out from published specs. Prices are averages of what three or more sellers quoted.