T-Mobile Sidekick 4G vs Xiaomi Redmi K30 Pro Zoom: specs comparison

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

Sidekick 4G: 56 g lighter

Sidekick 4G:

162 g

Redmi K30 Pro Zoom:

218 g
Width

Sidekick 4G: 14.4 mm narrower

Sidekick 4G:

61 mm

Redmi K30 Pro Zoom:

75.4 mm
Screen diagonal

Sidekick 4G: 3.17 in smaller diagonal

Sidekick 4G:

3.5 in

Redmi K30 Pro Zoom:

6.67 in
Rear camera layout

Sidekick 4G:

Single

Redmi K30 Pro Zoom:

Quad
Depth

Redmi K30 Pro Zoom: 6.1 mm thinner

Sidekick 4G:

15 mm

Redmi K30 Pro Zoom:

8.9 mm
Height

Sidekick 4G: 36.3 mm shorter

Sidekick 4G:

127 mm

Redmi K30 Pro Zoom:

163.3 mm

Physical size

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. Sidekick 4G

Height:

127 mm
Width:

61 mm
Depth:

15 mm +6.1 mm versus Redmi K30 Pro Zoom
2. Redmi K30 Pro Zoom

Height:

163.3 mm +36.3 mm versus Sidekick 4G
Width:

75.4 mm +14.4 mm versus Sidekick 4G
Depth:

8.9 mm

Weight

Bars start at zero and share a scale within this chart.

1. Sidekick 4G

162 g
2. Redmi K30 Pro Zoom

218 g

+56 g versus Sidekick 4G

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. Sidekick 4G

Screen diagonal:

3.5 in

Aspect ratio (height:width):

5:3

Approximate rectangular screen area:

34.9 cm²
2. Redmi K30 Pro Zoom

Screen diagonal:

6.67 in

Aspect ratio (height:width):

20:9

Approximate rectangular screen area:

107.4 cm²

Redmi K30 Pro Zoom has approximately 208.1% more rectangular screen area than Sidekick 4G.

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.

Recorded RAM for Sidekick 4G, Redmi K30 Pro Zoom, compared at the same storage capacity.
Storage	Sidekick 4G	Redmi K30 Pro Zoom
128 GB	Unknown	8 GB RAM
256 GB	Unknown	8 GB RAM
512 GB	Unknown	12 GB RAM

Sidekick 4G: Original memory entry

1 GB · 512 MB RAM

Practical features

Explicit Yes and No values are shown directly. Qualified or regional records retain their details. Unknown means the record is missing.

1. Sidekick 4G

NFC:: Unknown
Headphone jack:: Yes
Memory card support:: See details microSD · up to 32 GB (dedicated slot) · 2 GB included

2. Redmi K30 Pro Zoom

NFC:: Yes
Headphone jack:: Yes
Memory card support:: No

Battery capacity

Capacity is not battery life. No endurance test is implied.

Recorded battery capacity

Bars start at zero and share a scale within this chart.

1. Sidekick 4G

1500 mAh
2. Redmi K30 Pro Zoom

4700 mAh

+3200 mAh versus Sidekick 4G

Specifications

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.

1. Sidekick 4G2. Redmi K30 Pro Zoom

Everyday essentials

Everyday essentials — specifications for Sidekick 4G, Redmi K30 Pro Zoom.
Specification	Sidekick 4G	Redmi K30 Pro Zoom
Dimensions (HxWxD)	127 Х 61 Х 15 mm	163.3 Х 75.4 Х 8.9 mm
Weight	162 g	218 g
Technology	TFT	Super AMOLED
Screen size	3.5" inch	6.67" inch
Screen resolution	480 x 800 px	1080 x 2400 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.	1 GB 512 MB RAM	128GB 8GB RAM 256GB 8GB RAM 512GB 12GB RAM
Memory card support	microSD up to 32 GB (dedicated slot) 2 GB included	No
Battery Capacity is not battery life. No endurance test is implied.	1500 mAh Removable Li-Ion	4700 mAh Non-removable Li-Po
Operating system OS	Android 2.2 (Froyo)	Android 10.0; MIUI 11
Chipset	Hummingbird	Qualcomm SM8250 Snapdragon 865 (7 nm+)
NFC	Unknown	Yes
Headphone jack	Yes	Yes

Display

Display — specifications for Sidekick 4G, Redmi K30 Pro Zoom.
Specification	Sidekick 4G	Redmi K30 Pro Zoom
Touchscreen	capacitive touchscreen	capacitive touchscreen
Display colors	16M	16M
Screen area	34.9 cm2	107.4 cm2
Screen format	5:3 (height:width)	20:9 (height:width)
Screen to body ratio	45.0%	87.2%
PPI /points per inch/	267 PPI	395 PPI
Screen protection	Unknown	Corning Gorilla Glass 5

Camera and Video

Camera and Video — specifications for Sidekick 4G, Redmi K30 Pro Zoom.
Specification	Sidekick 4G	Redmi K30 Pro Zoom
Rear camera, main	3.15 MP Single	64 MP Quad
Camera specs	3.15 MP AF	64 MP 26mm (wide) 1/1.72'' 0.8µm PDAF OIS -8 MP (telephoto) OIS 3x optical zoom -13 MP 13mm (ultrawide) -2 MP (depth)
Functions	Unknown	HDR
Video	480p@30fps	1080p@30fps
Front camera, selfie	0.3 MP Single	20 MP Single
Specifications	VGA	Motorized pop-up 20 MP (wide) 1/3.4'' 0.8µm

Performance

Performance — specifications for Sidekick 4G, Redmi K30 Pro Zoom.
Specification	Sidekick 4G	Redmi K30 Pro Zoom
Processor CPU	1.0 GHz Cortex-A8	Octa-core (1x2.84 GHz Kryo 585 & 3x2.42 GHz Kryo 585 & 4x1.80 GHz Kryo 585)
Graphics processor GPU	PowerVR SGX540	Adreno 650

General specs

General specs — specifications for Sidekick 4G, Redmi K30 Pro Zoom.
Specification	Sidekick 4G	Redmi K30 Pro Zoom
Release date	2011 March	2020 March 24
Colors	Matte Black Pearl magenta	Grey Purple White Blue
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.	310 EUR	$ 749
Battery life	Stand by time- Up to 456 h Talking time- Up to 6 h 30 min	Unknown
Body build	Unknown	Glass front (Gorilla Glass 5) glass back (Gorilla Glass 5) aluminum frame

Communication and Connectivity

Communication and Connectivity — specifications for Sidekick 4G, Redmi K30 Pro Zoom.
Specification	Sidekick 4G	Redmi K30 Pro Zoom
SIM card	Mini-SIM	Dual SIM (Nano-SIM dual stand-by)
Network	Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900	Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 CDMA 800 & TD-SCDMA -3G - HSDPA 850 / 900 / 1900 / 2100 CDMA2000 1xEV-DO -4G - LTE band 1(2100) 3(1800) 5(850) 7(2600) 8(900) 34(2000) 38(2600) 39(1900) 40(2300) 41(2500) -5G - 5G band 1(2100) 41(2500) 78(3500) 79(4700); SA/NSA
Speed	HSPA 7.2/5.76 Mbps	HSPA 42.2/5.76 Mbps LTE-A; 5G
GPRS	Yes	Yes
Edge	Yes	Yes
Wi-Fi	Wi-Fi 802.11 b/g/n DLNA hotspot	Wi-Fi 802.11 a/b/g/n/ac/ax dual-band Wi-Fi Direct hotspot
GPS	Yes with A-GPS	Yes with dual-band A-GPS GLONASS BDS GALILEO QZSS
USB	microUSB 2.0	2.0 Type-C 1.0 reversible connector USB On-The-Go
Bluetooth	3.0 A2DP	5.1 A2DP LE aptX HD aptX Adaptive
Harmful irradiation	SAR - 0.34 W/kg (head) 0.96 W/kg (body)	Unknown

Music and Audio

Music and Audio — specifications for Sidekick 4G, Redmi K30 Pro Zoom.
Specification	Sidekick 4G	Redmi K30 Pro Zoom
Radio	Nо	Unknown
Others	Unknown	HDR10+ -DCI-P3 100% -500 nits typ. brightness (advertised) 24-bit/192kHz audio

Other features

Other features — specifications for Sidekick 4G, Redmi K30 Pro Zoom.
Specification	Sidekick 4G	Redmi K30 Pro Zoom
Dop	Sensors Accelerometer proximity - T-Mobile TV -MP4/H.264 player -MP3/WAV/eAAC+ player -Organizer -ThinkFree Office document editor PDF viewer -Voice memo -Predictive text input - Optical trackpad - Also known as T-Mobile T839 Sidekick 4G	Sensors Fingerprint (under display optical) accelerometer gyro proximity compass barometer Infrared port - Fast charging 33W 100% in 63 min (advertised) -USB Power Delivery -Quick Charge 4+

T-Mobile Sidekick 4G vs Xiaomi Redmi K30 Pro Zoom