Siemens SX45 (R4000) Specifications, Tests and Review

240 x 320
Operating System
Microsoft Windows CE 3.0
32 MB

Other Variants:

Complete technical specifications, details, expert ratings and review of Siemens SX45 (R4000). Find out how your chosen phone stacks up against the competition and whether it's the one that best meets your expectations with the phone comparison feature.

Product Type Smartphone
Form Factor Bar
Height 13.4 cm Worse than 51 % of phones rated.
Width 8.7 cm Better than 99 % of phones rated.
Depth 2.7 cm Worse than 99 % of phones rated.
Weight 303 g Worse than 99 % of phones rated.
Body Colour Grey, metallic silver
Waterproof (Water-resistant) -
Connector Type Serial port
Headset jack
USB - 4 PIN USB Type A

The Siemens SX45 (R4000) has a height of 13.4 cm, a width of 8.7 cm and a thickness of 2.7 cm. The weight of the phone is 303 g.

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DISPLAY Siemens SX45 (R4000)
Display Type LCD display
Display Technology TFT
Screen Size (Display Size) -
Screen Resolution (Display Resolution) 240 x 320 pixels Worse than 75 % of phones rated.
Colour Depth 65,536 colours Worse than 76 % of phones rated.

LCD displays are currently taking a back seat. This is mainly due to higher power consumption. In addition, they have the disadvantage of lower colour contrast, which can be reflected e.g. in the resulting photos. On the other hand, phones with LCD displays are in general cheaper than those with OLED technology.

Display Resolution of Siemens SX45 (R4000) is 240 x 320 pixels. A higher display resolution is a prerequisite for a sharper image. The standard for mid-range phones today is a Full HD resolution of 1920 × 1080 px. Cheaper phones, which usually have a smaller diagonal, have an HD resolution of 1280 × 720 px. Smaller resolutions can only be found in older models. Best phones, on the other hand, have a 4K resolution of 3840 x 2160 px.

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PROCESSOR Siemens SX45 (R4000)
Processor Type (CPU) R4000
Clock Speed 150 MHz Worse than 99 % of phones rated.

Siemens SX45 (R4000) is equipped with R4000. The processor frequency indicates how many instructions phone can process in 1 second. The higher the frequency, the better the performance. Standard processor frequency range today is between 1.8 GHz and 2.8 GHz. Siemens SX45 (R4000) reaches the frequency of 150 MHz.

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MEMORY Siemens SX45 (R4000)
RAM 32 MB Worse than 97 % of phones rated.
Internal Memory Size (Storage Capacity) -
Supported Flash Memory Cards (Expandable Memory) SD Memory Card, CompactFlash

An additional option to increase the storage capacity of this model is to insert a memory card.

RAM memory of the Siemens SX45 (R4000) is 32 MB. Most powerful phones currently have an operating memory of 12 GB or more, which is especially useful for demanding users such as gaming enthusiasts. Normally, phones nowadays have 6 to 8 GB of RAM, which means that the phone can easily handle normal operation and more demanding applications. Operating memory of less than 4 GB is found in lower-end phones or older models, and they are suitable for low-end users who don't use demanding applications and have the phone more for basic use.

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CAMERA Siemens SX45 (R4000)
Number of Main Cameras 0
Number of Front Cameras 0
Battery Capacity (Battery Size) -
Recharge Time (Charging Time) 7 hour(s)
Standby Time 150 hours Worse than 93 % of phones rated.
Talk Time 120 minutes Worse than 99 % of phones rated.
Run Time Details Talk: up to 120 min
Standby: up to 150 hrs
Battery Technology Lithium Ion

Standby time is 150 hours and it expresses the maximum time your phone can last on a single charge when you are not actively using it. Talk time, or we can say battery life when making calls, then indicates amount of time your phone will last from a full charge if you are constantly on a call. Siemens SX45 (R4000) is provided with a talk time about 120 minutes.

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CELLULAR Siemens SX45 (R4000)
Technology GSM
Operating System Microsoft Windows CE 3.0

The operating system in this case is Microsoft Windows CE 3.0.

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2G Band 900 GSM, 1800 GSM
Wireless Interface Infrared (IrDA)
OTHERS Siemens SX45 (R4000)
Included Accessories Carrying case, USB cable, power adapter, phone charging stand

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