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Microsoft Lumia 640 Dual SIM 8GB Photos, Specs, and Reviews

Created date: 2018-09-30 21:48:08, Updated date: 2020-04-16 16:44:27

Detailed review of Microsoft Lumia 640 Dual SIM 8GB's features

How does the Microsoft Lumia 640 Dual SIM 8GB's ease-of-use and capabilities rate? We reviewed this device from a wide range of aspects, according to each type of purpose. From the battery to its camera capabilities, CPU and design, we thoroughly reviewed this phone across a wide range of aspects.

Review of the product design of the Microsoft Lumia 640 Dual SIM 8GB

Rating of the ease of carrying it around and getting it in and out of bags or pockets

When deciding whether to buy an Microsoft Lumia 640 Dual SIM 8GB, the first important factor is its size. Smartphones are used daily, and so it is important how easily they can be carried around and pulled out of bags or pockets. This review assesses how easy it is to carry the Microsoft Lumia 640 Dual SIM 8GB around and put it away.

Ease of grasping it in your hand to carry around

The "Microsoft Lumia 640 Dual SIM 8GB" is a size that can easily be held in one hand. Even when holding it along with other things such as a wallet, its size makes it difficult to drop accidentally.

Ease of carrying it around when placing it in your pocket

It doesn't feel strange even when you put the "Microsoft Lumia 640 Dual SIM 8GB" in a pocket. In addition, when sitting on a chair with the phone in a pocket, it can be kept comfortably as it doesn't get caught on one's clothes or body.

Ease of getting it in and out of your pocket

The "Microsoft Lumia 640 Dual SIM 8GB" has a size that makes it relatively easy to keep and take out. While it sometimes get caught when sticking out of the pocket, I think it is just a matter of getting used to it.

Ease of getting it in and out of your bag

The "Microsoft Lumia 640 Dual SIM 8GB" is a size that allows you to take it in and out of your bag and use it with ease. Also, since it is compact, even if your bag is small it won't get too bulky which is convenient.

 
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Assessment of user-friendliness and ease of handling

It is important to consider the ease of using the phone in one hand. It can be said that it would be very useful if it is easier for you to send emails and instant messages or answer calls using one hand while cooking or using your computer. Here, we have reviewed the Microsoft Lumia 640 Dual SIM 8GB by focusing on the ease of using it in one hand and the ease of typing in letters.

Ease of grasping the phone in one hand

The "Microsoft Lumia 640 Dual SIM 8GB" is a size that allows you to have a firm grip even while using it. Since your hand is kept stable, it is difficult to accidentally drop the phone, and it is very easy to use. Since the original body size is small, the phone is still easy to hold even when using a case.

The weight you feel when using the phone with one hand

The "Microsoft Lumia 640 Dual SIM 8GB" is light, and I think it can be operated with one hand for a long time without feeling tired. However, it may be a bit heavy for those who are not used to using smart phones. Also, as it is not a heavy smart phone, its weight does not really change when a case is added.

Ease of pushing the upper button on the screen using one hand

Even when used with one hand, the "Microsoft Lumia 640 Dual SIM 8GB" has a size which allows buttons on the edges of the display to be operated. However, people with small hands may lose their grip if they try to press the buttons at the edges.

The size of the buttons on the App

The buttons displayed on the "Microsoft Lumia 640 Dual SIM 8GB" are large, and therefore it is difficult to press the wrong ones. While some buttons may look small depending on the app, you probably won't feel that stressed when you actually use it.

Ease of typing in letters using the flick function

Keys on the "Microsoft Lumia 640 Dual SIM 8GB" can be pressed even when held with one hand, but your grip may weaken when trying to flick the buttons at the edges. As a result, it may become unstable in the hand when flicking quickly, but it won't be easy to drop as long as you are careful.

Ease of typing in letters using the keybord funtion

If you aren't being careful it is really easy to mistype when using the "Microsoft Lumia 640 Dual SIM 8GB" with two hands since the buttons are so small. In addition, typing at high speeds is pretty difficult and I can't say its very suited for it.

Assessment of whether it is suitable for standard use

Assessment of whether it is suitable for standard use

For people who use their smartphone on a daily basis, high performance is a rather important factor. When the performance is not good enough, then, for example, applications don't work as they should or the screen is difficult to see, and this causes stress. This review looks at whether the performance of the Microsoft Lumia 640 Dual SIM 8GB is suitable for making phone calls, messaging, or using SNS.

The size of the letters and the ease of operation

In general, the "Microsoft Lumia 640 Dual SIM 8GB" displays characters and pictures in sizes that are easy to see. While some characters may look small depending on the app, they are not really difficult to see. Therefore, it can be said to be more than adequate for uses such as searching the Internet and messaging.

Ease of reading sentences

Since the "Microsoft Lumia 640 Dual SIM 8GB" displays characters smoothly, it can display them beautifully. Even when viewing small characters, the jaggedness of the character outline is not at a level seen during normal viewing and is displayed very naturally. Because of this, it is difficult for your eyes to become tired and make the phone suitable for reading long bodies of text.

The beauty of the overal screen

The "Microsoft Lumia 640 Dual SIM 8GB" can display photos and videos beautifully. While people with good eyes can see jagged outlines when they look at the display up close, it is not really something of concern.

Ease of writing sentences

For the "Microsoft Lumia 640 Dual SIM 8GB", the on-screen keyboard covers part of the screen when typing, but there is sufficient space for operation. Its size is suitable for entering long sentences, but I feel it may be a bit clumsy when editing office documents.

Does it have sufficient performance to make calls and send emails?

When using the "Microsoft Lumia 640 Dual SIM 8GB" for calls, emails, or for chatting the processing power can be insufficient, and you can experience slowdowns as a result. When using apps it felt like the motion would get caught up which was a bit stressful. For ordinary more relaxed use this slowing isn't at a level that would bother you, but its performance is not suited for fast control.

Does it have sufficient performance to search for things and using Social Networks?

The performance felt lacking when using the internet and SNS. Sometimes the apps felt like they were running slowly. If I kept using it when that happened apps would close suddenly or stop completely.

Does it have sufficient performance to do other tasks while searching for things and using Social Networks?

For example, if you're using multiple apps simultaneously, such as swapping between SNS or chat frequently, it will gradually start to operate slowly. If you use it for a long period in this way apps can begin to forcefully close due to lack of memory and can crash.

 
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Summary of Microsoft Lumia 640 Dual SIM 8GB performance and functions

The size and weight of the Microsoft Lumia 640 Dual SIM 8GB

The body of the "Microsoft Lumia 640 Dual SIM 8GB" is 72.2mm wide, 141.3mm long, and 8.8mm thick. Also, the screen size is 5.0inch, and it weighs 145.0g. Holding the phone and viewing the screen is as easy as for an average smartphone. It weighs roughly the same as an average smartphone. Though noticeable, the weight is acceptable and easy to handle.

Microsoft Lumia 640 Dual SIM 8GB
Microsoft Lumia 535 8GB
Microsoft Lumia 535 Dual SIM 8GB
Microsoft Lumia 640 Dual SIM 8GBMicrosoft Lumia 535 8GBMicrosoft Lumia 535 Dual SIM 8GB
ColorGlossy cyan/Orange/White/Matte blackOrange/green/white/black/gray/blueOrange/green/white/black/gray/blue
Dimensions (width x height x thickness)72.2mm x 141.3mm x 8.8mm72.4mm x 140.2mm x 8.8mm72.4mm x 140.2mm x 8.8mm
Weight145.0g146.0g146.0g
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Display of the Microsoft Lumia 640 Dual SIM 8GB

The "Microsoft Lumia 640 Dual SIM 8GB" has a IPS LCD screen with a resolution of 720 x 1280. Compared to normal smart phones, its screen is relatively beautiful. It shows great images even when up close, such as when using it for VR.

Microsoft Lumia 640 Dual SIM 8GB
Microsoft Lumia 535 8GB
Microsoft Lumia 535 Dual SIM 8GB
Microsoft Lumia 640 Dual SIM 8GBMicrosoft Lumia 535 8GBMicrosoft Lumia 535 Dual SIM 8GB
Display size5.0inch5.0inch5.0inch
Display typeIPS LCDIPS LCDIPS LCD
Screen resolution (width x height)720 x 1280540 x 960540 x 960
Pixel density293ppi220ppi220ppi
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The battery life of the Microsoft Lumia 640 Dual SIM 8GB

The "Microsoft Lumia 640 Dual SIM 8GB" has a battery capacity of 2500.0mAh. The battery's capacity is slightly larger than standard smart phones.

The processing capability of the Microsoft Lumia 640 Dual SIM 8GB

The "Microsoft Lumia 640 Dual SIM 8GB" uses the Qualcomm MSM8926 Snapdragon 400 CPU with 1.2GHz×4(4.0-cores). The memory capacity is 1.0GB. It has low spec processing power and its performance is lower than typical smartphones. Also, memory space is slightly smaller than average smartphones. There are many times when storage space feels insufficient. Ultimately, it's just barely enough to get by.

Microsoft Lumia 640 Dual SIM 8GB
Microsoft Lumia 535 8GB
Microsoft Lumia 535 Dual SIM 8GB
Microsoft Lumia 640 Dual SIM 8GBMicrosoft Lumia 535 8GBMicrosoft Lumia 535 Dual SIM 8GB
ChipsetQualcomm MSM8926 Snapdragon 400Qualcomm Snapdragon 200Qualcomm Snapdragon 200
CPU specs1.2GHz×4(4.0-cores)1.2GHz×4(4.0-cores)1.2GHz×4(4.0-cores)
RAM size1.0GB1.0GB1.0GB
Storage size8.0GB8.0GB8.0GB
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The camera of the Microsoft Lumia 640 Dual SIM 8GB

The "Microsoft Lumia 640 Dual SIM 8GB" has a back camera with 8.0MP. The front camera has 1.0MP. The rear camera performance is about the same as a typical smartphone. The image quality for longer distance photography is less than satisfactory, but on the whole, there are no issues with short distance photos. Again, the performance of the front camera is lower than that of ordinary smartphones. Don't expect great image quality from this either.

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