Philips S309 vs Xiaomi Redmi 4

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

  S309: 23 g lighter

  S309:

  127 g

  Redmi 4:

  150 g

• Width

  S309: 5.3 mm narrower

  S309:

  64.7 mm

  Redmi 4:

  70 mm

• Screen diagonal

  S309: 1 in smaller diagonal

  S309:

  4 in

  Redmi 4:

  5 in

• Depth

  Redmi 4: 2.1 mm thinner

  S309:

  10.8 mm

  Redmi 4:

  8.7 mm

• Height

  S309: 11.6 mm shorter

  S309:

  127.6 mm

  Redmi 4:

  139.2 mm

• Release year

  S309:

  2015

  Redmi 4:

  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. S309

   Height:

   127.6 mm

   Width:

   64.7 mm

   Depth:

   10.8 mm +2.1 mm versus Redmi 4

2. 2. Redmi 4

   Height:

   139.2 mm +11.6 mm versus S309

   Width:

   70 mm +5.3 mm versus S309

   Depth:

   8.7 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. S309

   Screen diagonal:

   4 in

   Aspect ratio (height:width):

   5:3

   Approximate rectangular screen area:

   45.5 cm²

2. 2. Redmi 4

   Screen diagonal:

   5 in

   Aspect ratio (height:width):

   16:9

   Approximate rectangular screen area:

   68.9 cm²

Redmi 4 has approximately 51.3% more rectangular screen area than S309.

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.