HP iPAQ rw6815 vs Lava Z40

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

  Z40: 20 g lighter

  iPAQ rw6815:

  140 g

  Z40:

  120 g

• Width

  iPAQ rw6815: 5.9 mm narrower

  iPAQ rw6815:

  58 mm

  Z40:

  63.9 mm

• Screen diagonal

  iPAQ rw6815: 1.3 in smaller diagonal

  iPAQ rw6815:

  2.7 in

  Z40:

  4 in

• Depth

  Z40: 7.8 mm thinner

  iPAQ rw6815:

  19.5 mm

  Z40:

  11.7 mm

• Height

  iPAQ rw6815: 23.5 mm shorter

  iPAQ rw6815:

  102 mm

  Z40:

  125.5 mm

• Release year

  iPAQ rw6815:

  2006

  Z40:

  2019

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. iPAQ rw6815

   Height:

   102 mm

   Width:

   58 mm

   Depth:

   19.5 mm +7.8 mm versus Z40

2. 2. Z40

   Height:

   125.5 mm +23.5 mm versus iPAQ rw6815

   Width:

   63.9 mm +5.9 mm versus iPAQ rw6815

   Depth:

   11.7 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. iPAQ rw6815

   Screen diagonal:

   2.7 in

   Aspect ratio (height:width):

   4:3

   Approximate rectangular screen area:

   22.6 cm²

2. 2. Z40

   Screen diagonal:

   4 in

   Aspect ratio (height:width):

   5:3

   Approximate rectangular screen area:

   45.5 cm²

Z40 has approximately 101.7% more rectangular screen area than iPAQ rw6815.

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.