Lava Z91 vs Sony Xperia XZ Premium

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

  Z91: 48 g lighter

  Z91:

  147 g

  Xperia XZ Premium:

  195 g

• Width

  Z91: 4.1 mm narrower

  Z91:

  72.9 mm

  Xperia XZ Premium:

  77 mm

• Screen diagonal

  Xperia XZ Premium: 0.24 in smaller diagonal

  Z91:

  5.7 in

  Xperia XZ Premium:

  5.46 in

• Chipset

  Z91:

  Mediatek MT6739 (28 nm)

  Xperia XZ Premium:

  Qualcomm MSM8998 Snapdragon 835 (10 nm)

• Height

  Z91: 4 mm shorter

  Z91:

  152 mm

  Xperia XZ Premium:

  156 mm

• Release year

  Z91:

  2018

  Xperia XZ Premium:

  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. Z91

   Height:

   152 mm

   Width:

   72.9 mm

   Depth:

   7.7 mm

2. 2. Xperia XZ Premium

   Height:

   156 mm +4 mm versus Z91

   Width:

   77 mm +4.1 mm versus Z91

   Depth:

   7.9 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. Z91

   Screen diagonal:

   5.7 in

   Aspect ratio (height:width):

   18:9

   Approximate rectangular screen area:

   83.8 cm²

2. 2. Xperia XZ Premium

   Screen diagonal:

   5.46 in

   Aspect ratio (height:width):

   16:9

   Approximate rectangular screen area:

   82.2 cm²

Z91 has approximately 2% more rectangular screen area than Xperia XZ Premium.

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.