Celkon Campus Prime vs Philips S309

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

  Campus Prime: 7.8 g lighter

  Campus Prime:

  119.2 g

  S309:

  127 g

• Width

  S309: 2.3 mm narrower

  Campus Prime:

  67 mm

  S309:

  64.7 mm

• Screen diagonal

  S309: 0.5 in smaller diagonal

  Campus Prime:

  4.5 in

  S309:

  4 in

• Depth

  Campus Prime: 1.5 mm thinner

  Campus Prime:

  9.3 mm

  S309:

  10.8 mm

• Height

  S309: 4.4 mm shorter

  Campus Prime:

  132 mm

  S309:

  127.6 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. Campus Prime

   Height:

   132 mm +4.4 mm versus S309

   Width:

   67 mm +2.3 mm versus S309

   Depth:

   9.3 mm

2. 2. S309

   Height:

   127.6 mm

   Width:

   64.7 mm

   Depth:

   10.8 mm +1.5 mm versus Campus Prime

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. Campus Prime

   Screen diagonal:

   4.5 in

   Aspect ratio (height:width):

   16:9

   Approximate rectangular screen area:

   55.8 cm²

2. 2. S309

   Screen diagonal:

   4 in

   Aspect ratio (height:width):

   5:3

   Approximate rectangular screen area:

   45.5 cm²

Campus Prime has approximately 22.6% 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.