Celkon A66 vs HTC U Ultra

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

  A66: 72 g lighter

  A66:

  98 g

  U Ultra:

  170 g

• Width

  A66: 12.6 mm narrower

  A66:

  67.2 mm

  U Ultra:

  79.8 mm

• Screen diagonal

  A66: 1.2 in smaller diagonal

  A66:

  4.5 in

  U Ultra:

  5.7 in

• Depth

  U Ultra: 3 mm thinner

  A66:

  11 mm

  U Ultra:

  8 mm

• Height

  A66: 26.4 mm shorter

  A66:

  136 mm

  U Ultra:

  162.4 mm

• Release year

  A66:

  2014

  U Ultra:

  2017

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. A66

   Height:

   136 mm

   Width:

   67.2 mm

   Depth:

   11 mm +3 mm versus U Ultra

2. 2. U Ultra

   Height:

   162.4 mm +26.4 mm versus A66

   Width:

   79.8 mm +12.6 mm versus A66

   Depth:

   8 mm

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. A66

   Screen diagonal:

   4.5 in

   Aspect ratio (height:width):

   16:9

   Approximate rectangular screen area:

   55.8 cm²

2. 2. U Ultra

   Screen diagonal:

   5.7 in

   Aspect ratio (height:width):

   16:9

   Approximate rectangular screen area:

   89.6 cm²

U Ultra has approximately 60.4% more rectangular screen area than A66.

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.