Lava Z91 vs Vodafone Smart first 7

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

  Smart first 7: 37 g lighter

  Z91:

  147 g

  Smart first 7:

  110 g

• Width

  Smart first 7: 10.1 mm narrower

  Z91:

  72.9 mm

  Smart first 7:

  62.8 mm

• Screen diagonal

  Smart first 7: 2.2 in smaller diagonal

  Z91:

  5.7 in

  Smart first 7:

  3.5 in

• Chipset

  Z91:

  Mediatek MT6739 (28 nm)

  Smart first 7:

  Spreadtrum SC7731G

• Depth

  Z91: 4.3 mm thinner

  Z91:

  7.7 mm

  Smart first 7:

  12 mm

• Height

  Smart first 7: 37.6 mm shorter

  Z91:

  152 mm

  Smart first 7:

  114.4 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. Z91

   Height:

   152 mm +37.6 mm versus Smart first 7

   Width:

   72.9 mm +10.1 mm versus Smart first 7

   Depth:

   7.7 mm

2. 2. Smart first 7

   Height:

   114.4 mm

   Width:

   62.8 mm

   Depth:

   12 mm +4.3 mm versus Z91

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. Z91

   Screen diagonal:

   5.7 in

   Aspect ratio (height:width):

   18:9

   Approximate rectangular screen area:

   83.8 cm²

2. 2. Smart first 7

   Screen diagonal:

   3.5 in

   Aspect ratio (height:width):

   3:2

   Approximate rectangular screen area:

   36.5 cm²

Z91 has approximately 129.9% more rectangular screen area than Smart first 7.

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.