A1 Smart N9 vs Microsoft Lumia 550

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.

• Width

  Lumia 550: 1 mm narrower

  Smart N9:

  68.8 mm

  Lumia 550:

  67.8 mm

• Screen diagonal

  Lumia 550: 0.8 in smaller diagonal

  Smart N9:

  5.5 in

  Lumia 550:

  4.7 in

• Chipset

  Smart N9:

  Mediatek MT6739WA (28 nm)

  Lumia 550:

  Qualcomm MSM8909 Snapdragon 210 (28 nm)

• Depth

  Smart N9: 1.2 mm thinner

  Smart N9:

  8.7 mm

  Lumia 550:

  9.9 mm

• Height

  Lumia 550: 11 mm shorter

  Smart N9:

  147.1 mm

  Lumia 550:

  136.1 mm

• Release year

  Smart N9:

  2018

  Lumia 550:

  2015

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. Smart N9

   Height:

   147.1 mm +11 mm versus Lumia 550

   Width:

   68.8 mm +1 mm versus Lumia 550

   Depth:

   8.7 mm

2. 2. Lumia 550

   Height:

   136.1 mm

   Width:

   67.8 mm

   Depth:

   9.9 mm +1.2 mm versus Smart N9

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. Smart N9

   Screen diagonal:

   5.5 in

   Aspect ratio (height:width):

   18:9

   Approximate rectangular screen area:

   78.1 cm²

2. 2. Lumia 550

   Screen diagonal:

   4.7 in

   Aspect ratio (height:width):

   16:9

   Approximate rectangular screen area:

   60.9 cm²

Smart N9 has approximately 28.2% more rectangular screen area than Lumia 550.

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.