If two SIM cards want to be shared, but you do not always want to carry two smartphones with you, you should have a dual SIM smartphone. The Nokia Lumia 630 Dual-SIM Windows Phone with Windows Phone 8.1 operating system is not only available with Android system, but also Windows.

At first glance

The dual SIM device can hardly be distinguished from a single SIM variant. Only when the upper shell is removed, the two SIM card slots become visible. These are marked with the numbers 1 and 2. Of course there is still room for a slot for memory cards. The normal SIM cards have now degenerated and so are required for the Nokia Lumia 630 Dual SIM Windows Mobile, Micro SIM cards. Once the device is switched on, the start screen for SMS and telephone calls is displayed for both SIM card symbols. In addition, these are marked with 1 and 2 and, depending on which SIM card is currently required, simply select on the touch screen. A very simple principle.  

Call Management: How it works

If you do not want to change between two symbols, you can also connect the two tiles together. Thus, only one symbol appears on the screen. If you want to use this connection, you should first familiarize yourself with the address book of the Nokia Lumia 630 Dual SIM Windows mobile phone. The address book entries can be set so that an appropriate SIM card can be selected for each telephone number. For colleagues, for example, the company SIM card is preset, for friends the private number.  

Many settings

The Nokia Lumia 630 Dual-SIM Windows Mobile requires settings, which are not even so conscious, you should have used a device with two SIM cards. It is important to select which mobile phone tariff is to be used for the data connection. With just one SIM card you can finally go online. However, a hook has the matter, however: Mobile Internet works on the Nokia Lumia 630 Dual SIM Windows mobile phone does not use LTE. UMTS is limited to 21.6 Mbps. However, this is not a problem for fast mobile Internet, it can be used normally.  

A mobile phone module but two call numbers

The newer dual SIM smartphones use both SIM cards for a mobile phone, including the Nokia Lumia 630 Dual SIM Windows mobile phone. Here is a small trick of the smartphone: The device logs in alternately within a few milliseconds at the providers and checks whether calls arrive. This works so fast that no disadvantages arise. There is, however, a small disadvantage: conference telephones can not be routed through both numbers, a mediation is not possible.  

What does the device have to offer?

The screen can be seen, the resolution is good and the processing is also convincing. The operating speed is fast and also the main camera convinces. However, there is no front camera, so self-help is difficult to accomplish. The device has fewer sensors and no automatic brightness control. The Nokia Lumia 630 Dual SIM device basically does not show any differences to the single SIM version, except that the battery is charged by two SIM cards, which lasts approximately 11 hours after complete charging, the single SIM- Variant about 12 hours. The reception is good, but the reception in the UMTS network is slightly worse.