Samsung DoubleTime I857 vs vivo Y91 (Mediatek)

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

  DoubleTime I857: 15.5 g lighter

  DoubleTime I857:

  148 g

  Y91 (Mediatek):

  163.5 g

• Width

  DoubleTime I857: 13.1 mm narrower

  DoubleTime I857:

  62 mm

  Y91 (Mediatek):

  75.1 mm

• Screen diagonal

  DoubleTime I857: 3.02 in smaller diagonal

  DoubleTime I857:

  3.2 in

  Y91 (Mediatek):

  6.22 in

• Chipset

  DoubleTime I857:

  Qualcomm MSM7230

  Y91 (Mediatek):

  Mediatek MT6762 Helio P22 (12 nm)

• Rear camera layout

  DoubleTime I857:

  Single

  Y91 (Mediatek):

  Dual

• Depth

  Y91 (Mediatek): 6.7 mm thinner

  DoubleTime I857:

  15 mm

  Y91 (Mediatek):

  8.3 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. DoubleTime I857

   Height:

   113 mm

   Width:

   62 mm

   Depth:

   15 mm +6.7 mm versus Y91 (Mediatek)

2. 2. Y91 (Mediatek)

   Height:

   155.1 mm +42.1 mm versus DoubleTime I857

   Width:

   75.1 mm +13.1 mm versus DoubleTime I857

   Depth:

   8.3 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. DoubleTime I857

   Screen diagonal:

   3.2 in

   Aspect ratio (height:width):

   3:2

   Approximate rectangular screen area:

   30.5 cm²

2. 2. Y91 (Mediatek)

   Screen diagonal:

   6.22 in

   Aspect ratio (height:width):

   19:9

   Approximate rectangular screen area:

   96.6 cm²

Y91 (Mediatek) has approximately 216.7% more rectangular screen area than DoubleTime I857.

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.

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.