HTC U Ultra vs O2 XDA Stellar

Key differences

Calculated from recorded specifications using minimum difference thresholds. These are differences, not an overall ranking. For three phones, numeric highlights compare the two extremes.

• Weight

  U Ultra: 20 g lighter

  U Ultra:

  170 g

  XDA Stellar:

  190 g

• Width

  XDA Stellar: 20.8 mm narrower

  U Ultra:

  79.8 mm

  XDA Stellar:

  59 mm

• Screen diagonal

  XDA Stellar: 2.9 in smaller diagonal

  U Ultra:

  5.7 in

  XDA Stellar:

  2.8 in

• Chipset

  U Ultra:

  Qualcomm MSM8996 Snapdragon 821 (14 nm)

  XDA Stellar:

  Qualcomm MSM7200

• Depth

  U Ultra: 10.6 mm thinner

  U Ultra:

  8 mm

  XDA Stellar:

  18.6 mm

• Height

  XDA Stellar: 50.4 mm shorter

  U Ultra:

  162.4 mm

  XDA Stellar:

  112 mm

Relative size, not calibrated actual size. Front and side outlines share one scale and a bottom baseline. Generic outlines use recorded body dimensions, excluding camera bumps.

1. 1. U Ultra

   Height:

   162.4 mm +50.4 mm versus XDA Stellar

   Width:

   79.8 mm +20.8 mm versus XDA Stellar

   Depth:

   8 mm

2. 2. XDA Stellar

   Height:

   112 mm

   Width:

   59 mm

   Depth:

   18.6 mm +10.6 mm versus U Ultra

Screen size

Approximate rectangular screens calculated from recorded diagonal and aspect ratio at one relative scale. Rounded corners and cutouts are not subtracted. These are not phone outlines or calibrated actual sizes.

1. 1. U Ultra

   Screen diagonal:

   5.7 in

   Aspect ratio (height:width):

   16:9

   Approximate rectangular screen area:

   89.6 cm²

2. 2. XDA Stellar

   Screen diagonal:

   2.8 in

   Aspect ratio (height:width):

   4:3

   Approximate rectangular screen area:

   24.3 cm²

U Ultra has approximately 268.9% more rectangular screen area than XDA Stellar.

Memory variants

Each row compares the same storage capacity. Cells show recorded RAM alternatives, not combined maxima. Not recorded does not mean unavailable in every market.

No unambiguous storage/RAM pairings are recorded. See the original specifications below.

Practical features

Explicit Yes and No values are shown directly. Qualified or regional records retain their details. Unknown means the record is missing.

Battery capacity

Capacity is not battery life. No endurance test is implied.

Open a section for more detail. On narrow screens, swipe sideways or use Left/Right arrow keys while the table is focused. Unknown means missing data, not No. Recorded zero values are shown as recorded.