Sizometry
  • Tool
  • Compare
  • Phones
  • Tablets
  • Watches
☕Buy me a coffee

Device dimensions

  • iPhone Duo size and weight
  • Galaxy Z Fold8 size and weight
  • iPhone 18 Pro size and weight
  • iPhone 18 Pro Max size and weight
  • iPhone 17 Pro size and weight
  • iPhone 17 Pro Max size and weight
  • Galaxy Z Fold8 Ultra size and weight
  • Galaxy S26 Ultra size and weight
Privacy·Terms·Contact
contact@sizometry.com

© 2026 Sizometry. All rights reserved.

Device summary

Nothing

Phone (4b)

POCO

X8

Full specifications

Full specifications
Basic information
Release year20262026
Starting price——
Display size—6.8-inch
Dimensions78.2 mm × 164.4 mm × 8.6 mm78.3 mm × 163.4 mm × 8.6 mm
Weight210 g223 g
Front material——
Back material——
Display
Display technology—AMOLED
Resolution—2772 × 1280
Refresh rate—120 Hz
Performance
ChipsetSnapdragon 6 Gen 4Snapdragon 6s Gen 4
RAM—6 GB, 8 GB, 12 GB
Storage—128 GB, 256 GB
Cameras
Main cameraMain · 50 MPWide · 50 MP
Depth camera—Depth · 2 MP
Front cameras—Front · 16 MP
Video recording4K—
Battery & charging
Wired charging—67 W
Typical capacity—8340 mAh
Build & durability
Ingress protection—IP66/IP68/IP69/IP69K
Full specifications
Basic information
Release year20262026
Starting price——
Display size—6.8-inch
Dimensions78.2 mm × 164.4 mm × 8.6 mm78.3 mm × 163.4 mm × 8.6 mm
Weight210 g223 g
Front material——
Back material——
Display
Display technology—AMOLED
Resolution—2772 × 1280
Refresh rate—120 Hz
Performance
ChipsetSnapdragon 6 Gen 4Snapdragon 6s Gen 4
RAM—6 GB, 8 GB, 12 GB
Storage—128 GB, 256 GB
Cameras
Main cameraMain · 50 MPWide · 50 MP
Depth camera—Depth · 2 MP
Front cameras—Front · 16 MP
Video recording4K—
Battery & charging
Wired charging—67 W
Typical capacity—8340 mAh
Build & durability
Ingress protection—IP66/IP68/IP69/IP69K

Key differences

The most meaningful measured gaps in size and weight — not an overall winner.

  • Weight

    Phone (4b)

    13 g lighter

  • Height

    Phone (4b)

    1 mm taller · minor difference

  • Width

    Very similar width

  • Thickness

    Very similar thickness

What these size differences mean

Calculated from the dimensions shown, rounded to 0.1 mm and 1 g. Percentages use the smaller measurement as the reference. Fold and rotation settings affect the dimensions compared.

  • X8 is 0.1 mm (0.1% relative to Phone (4b)) wider. Check this difference against the width of your current device and pocket opening.
  • Phone (4b) is 1 mm (0.6% relative to X8) taller. This describes the body outline; screen diagonal alone does not tell you the overall size.
  • Both have the same listed thickness (8.6 mm) at the displayed precision. Cases and camera protrusions can change the clearance you need.
  • Phone (4b) is 13 g lighter. This is the listed device-weight difference, not a measured comfort rating.

Use these figures to compare physical size. They do not establish one-handed reach, pocket fit, durability or an overall winner.

Size in everyday life

Picture it in your front pocket.

Front pocket reference

2018 US jeans study · 20 brands · 80 pairs · Approx. 32-inch waists

Phone (4b)

X8

View Phone (4b) detailsView X8 details

Sources and measurement notes

Sizometry compares published specifications and calculates differences. These are not hands-on measurements or tests of comfort, performance or pocket fit.

Phone (4b)

  • Specification reference (nothing.tech)

X8

  • Specification reference (www.po.co)
  • Product reference (www.po.co)

Check the exact model, year, region and configuration on the linked page. References may cover several variants. Folded and unfolded dimensions differ; cases and camera protrusions may change the space a device needs. Drawings share a relative scale and are not calibrated to life size on your screen.

Phone (4b) vs X8 Size Comparison

Compare in Sizometry Tool

See both devices at the same scale.

Compare in Tool

Size in everyday life

Picture it in your front pocket.

Front pocket reference

2018 US jeans study · 20 brands · 80 pairs · Approx. 32-inch waists

Phone (4b)

X8