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I just put another SIM in phone, its Micro SIM, and its not working.
I know that Micro SIM is working correctly in another phone, but in this SIM cant register on network. He find that network and its says VIP-HR (that how my network is call) but cant register.

[Only registered and activated users can see links Click here to register] Its searching all time.
[Only registered and activated users can see links Click here to register] Its turn on.
[Only registered and activated users can see links Click here to register] HR VIP 2G its network I want to connect.
[Only registered and activated users can see links Click here to register] And after searching manually for network, its says this.

I try to put only this Micro SIM in phone, but wont work.

Any help?

Hi rigzrk !

Look at the link below (it's old but a lot of others links tell the same things):

[Only registered and activated users can see links Click here to register]

HOW TO MANAGE YOUR DUAL-SIM ANDROID PHONE (copy & paste from a link written in 2012):

The majority of dual sim phones have a WCDMA(3G) and GSM (2G) sim card slot as the primary slot and a GSM only sim card slot as the secondary. This means that only one sim can use a 3G connection, the other sim will only be able to pick up a 2G signal. So as long as you don’t plan on using the 3G internet connection on both sims you’ll be fine. The 3G sim card slot is marked with a “W”, the 2G sim card slot is marked with a “G”. There are plans for newer dual-sim Android phones which have dual 3G compatible sim slots.
When you turn on your phone you are greeted with two signal bars at the top of the phone, the first one is for the first sim slot, the second one is for the second sim slot. The majority of phones work in a dual standby mode, whereas a minority work in a dual active mode. Dual standby is when both sims can work at the same time, but say for example you use one sim card to make a call, the other sim card will not work and be on standby for the duration of the call. Dual active is where both sim cards will be active all the time, even during calls. An easy way to get around the Dual standby limitation of turning one sim off when you’re on a call is to set up call forwarding on both sims to each other. This means that if you are using Sim 1 on a call and someone calls you on Sim 2, which is on standby, the call will be forwarded to sim 1 with the active connection and will be listed as a waiting call which you can choose to answer. Simple!

how to manage dual-sim android phone_1

You can manage both Sim cards from the settings. Just click on sim management at the top. Here you get the option to turn the Sim cards on and off at will and you can set the defaults for each sim. For example I use 3 as my data connection, where as I have O2 as my default for voice calls. You can also set the phone to always ask you which sim card to use. The picture below shows you what it looks like when you set it to “always ask”.

how to manage dual-sim android phone 2

You can also assign contacts to certain Sim cards, this is useful when differentiating between work colleagues and personal contacts. The call/texts goes through on the sim of your choice no matter what. This can be changed from the contact itself, or from the sim management settings.

how to manage a dual sim android phone 3

When you get a call or text, or if you send a call or text, the phone will display the Sim used. For example, you can see that one text was from my three number, another text was to my O2 number. You can also change these settings on the go. For example, when in the dialer or messaging service, drag down the notification bar and you get an option to switch to a different sim card as default.