Energizer Ultimate U620S vs O2 XDA Serra

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.

• Width

  XDA Serra: 24.5 mm narrower

  Ultimate U620S:

  75.5 mm

  XDA Serra:

  51 mm

• Screen diagonal

  XDA Serra: 3.4 in smaller diagonal

  Ultimate U620S:

  6.2 in

  XDA Serra:

  2.8 in

• Chipset

  Ultimate U620S:

  Mediatek MT6765 Helio P35 (12nm)

  XDA Serra:

  Qualcomm MSM7201A

• Rear camera layout

  Ultimate U620S:

  Triple

  XDA Serra:

  Single

• Depth

  Ultimate U620S: 9.8 mm thinner

  Ultimate U620S:

  8.3 mm

  XDA Serra:

  18.1 mm

• Height

  XDA Serra: 53.8 mm shorter

  Ultimate U620S:

  155.8 mm

  XDA Serra:

  102 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. Ultimate U620S

   Height:

   155.8 mm +53.8 mm versus XDA Serra

   Width:

   75.5 mm +24.5 mm versus XDA Serra

   Depth:

   8.3 mm

   Weight:

   Unknown

2. 2. XDA Serra

   Height:

   102 mm

   Width:

   51 mm

   Depth:

   18.1 mm +9.8 mm versus Ultimate U620S

   Weight:

   165 g

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. Ultimate U620S

   Screen diagonal:

   6.2 in

   Aspect ratio (height:width):

   18.5:9

   Approximate rectangular screen area:

   97.6 cm²

2. 2. XDA Serra

   Screen diagonal:

   2.8 in

   Aspect ratio (height:width):

   4:3

   Approximate rectangular screen area:

   24.3 cm²

Ultimate U620S has approximately 301.8% more rectangular screen area than XDA Serra.

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.