11

There are actually three types of dual SIM phones. Dual SIM Standby (DSS): Only one SIM can be used at a time, 1 radio chip. The phone has single IMEI number. Dual SIM Dual Standby (DSDS): Two SIMs can be used at a time, but if one opens a call or data connection, the other is offline. The phone has two different IMEI numbers. Dual SIM Active (or sometimes ...


4

Android phone basically have two different dual SIM systems, AFAIK: DSFA (Dual Sim Full Active): both SIMs can receive calls simultaneously, and you can switch between one call and the other DSDS (Dual Sim Dual Standby): when one SIM is receiving a call, the other one is in standby. It will receive nor calls, nor SMS. It is like the second SIM is put in a ...


4

I had the same issue. Found this solution on another site: Open "Settings" App Go to "SIM Card Manager" Tap on "Data Service Network" Choose the SIM as the Data SIM Note that only the first SIM slot supports 3G Internet. So if you want to use 3G you must plug your 3G SIM in the first slot.


4

Dual Sim standby : If you are talking in Sim A when someone calls to Sim B then they will hear Sim B is not reachable. You wont get prompted Dual Sim Active : If you are talking in Sim A when someone calls to Sim B then they will hear your call is on waiting. You will get prompted and you can place the current call in hold and answer the new call. But you ...


4

For lollipop versions, Goto Settings -> Sim Cards -> Call settings -> Phone account settings -> Make calls with -> Under this you will have three options Sim 1 Sim 2 Ask First Select Ask First option from that menu and when you call someone from the contacts, you will be shown the Sim 1 and Sim 2 option. Select the Remember SIM for number checkbox and ...


4

Enter download mode by powering down the device and then holding both VOL_DOWN and POWER to power it back up. It will boot to a screen saying hTC download mode. The 3rd line of the displayed info will say something like htc_oceuhl PVT S-ON. uhl corresponds to the single-SIM variant, dugl is the international dual-SIM variant, and dtwl is the Chinese dual-...


3

Android's multipath TCP networking layer is only able to use WiFi and Cellular concurrently and can't use multiple of the same connections at once (as far as I know). However. You can use a mobile WiFi Router from Huawei for example. To get a seamless LTE and WiFi over LTE connection. The Huawei router is very fast and as big as my phone so very easy to ...


3

Yes you can use two WhatsApp account in a single phone,and here is an alternate method. There are so many application using them you can use dual WhatsApp, and Parallel Space, simply install application Parallel Space from Google Play. After installing, there you will see an option for WhatsApp, using that you can use another WhatsApp account. Using Parallel ...


3

You can't install an app twice unless you go deep down hacking. I don't know how WhatsApp works but you may just be able to put multiple accounts to one device. These accounts then may be handled separately by a single app. You can also try to look for alternatives if WhatsApp doesn't support multiple accounts.


3

You won't have any problems if you insert only one SIM into dual SIM phone, i have dual sim phone myself with only one SIM in it and it work without any problem. Phone will work even you don't have any SIM in it.


3

Requires Rooted Device, Xposed framework installed, latest version of GravityBox Xposed module and an automation app - I use Macrodroid Create a macro in Macrodroid Trigger: Application Launched → select from the drop down list, all apps you want to use on SIM card linked to banking, WhatsApp, Uber etc (5 apps in example below ) Application ...


3

Going by your problem I suspected that your device is Dual SIM Dual Standby, which was confirmed by GSM Arena. What this means is that you can use only one SIM at a time be it for data or voice unlike Dual SIM Dual Active phones where you can use both SIMs simultaneously for voice /data. Also the user manual which can be downloaded from here does not ...


2

From your screenshot, it's apparent that you're using a dual SIM phone and that Data Roaming is enabled on one of those SIM cards. I've never used a dual SIM phone but I read on a forum that at any point of time only one of the SIM cards can be used for data while the other is on standby or being used for a voice call. Make sure both your SIM cards have ...


2

As far as phone calls are concerned, when you use SIM1 for a phone call, SIM 2 will be unavailable to receive calls or messages. Anybody that tries to call, the call will not go through. As far as Data connection is concerned, when you use SIM1 for Data, and you get a call on SIM2, data connection is automatically put on hold, and will continue when the ...


2

I would suggest the best solution is speedify for the original poster as this service enables multiple internet connections, including LTE/4G, 3G, Wifi etc to be combined. The original question caught my interest as I had the same issue with variable mobile coverage whilst on the move. In my example, I'm travelling up and down from Southampton to London ...


2

Google's Project Fi is a carrier tailor-made for traveling so you don't need an additional hotspot. It's basically what you're describing above. Fi is less expensive than almost any other US carrier you'll find, aggregates signal from 4 different carriers, doesn't charge extra for international data, and supports voice calling and LTE data in 135 countries. ...


2

I want to use dual sim phone with one number registered with whatsapp and another number with data pack , is it possible? Yes. In dual sim Android phones, you can only use one sim's mobile data at once. You can choose which sim to be used with mobile data in settings. And WhatsApp doesn't require the same sim's mobile data. After installing and sms/cal ...


2

Short answer No, because WhatsApp doesn't officially support multiple accounts. Longer Answer It's technically possible, but you'll need two different versions of WhatsApp. Customised ('modded') versions of WhatsApp exist, and if you install both the official version and a reliable unofficial version, you can in fact have two WhatsApp numbers on the same ...


2

In my Android 4.2.1, I have to set Settings → SIM Management → Roaming → Show roaming reminder → Never. Alternatively, use adb to disable the notification for a particular SIM. Setup ADB in PC, enable USB debugging in device, connect the device into PC, launch a shell on latter and follow these instructions: To enable data roaming for ...


2

You can insert only one SIM and work fine . See this In a dual sim phone, must both sims be used? By just inserting second SIM battery won't drain extra. If at all there is any battery drain, it would be because of second SIM being active and checking for signal or registering itself on the network.


2

This post didn't get much attention, so I don't know if it's worth posting the answer, but I did find a solution. I didn't know when posting this that the solution is dependent on the version of Android. In my case, the phones have Android 9 (Pie). The command that I found to turn on/off SIM cards is: adb shell service call phone 180 i32 X i32 Y where X ...


2

If you're using the internet on the phone, does Android auto-switch between SIMs on dual-SIM phones when one of the SIMs has poor reception? No. Android doesn't offer such provisions. Pixel 3a line is dual Sim and if Android has this provision, it would have been incorporated in these phones. It is most likely referring to Dual SIM Dual Active devices where ...


2

a hybrid dual SIM slot is a technology that offers both features of a SIM card and a MicroSD card. The hybrid dual SIM slot also means the OEM provided just two spaces instead of the traditional three slots for dual SIM cards and a MicroSD card. In other words, either two SIM cards are used or one SIM card slot is sacrificed to serve the role of a MicroSD ...


2

GSM Arena says your phone has SIMs in DSDS mode To achieve what you want you need a phone with SIMs in DSDA mode See What is the difference between dual sim active and dual sim stand-by? So, sorry, you won't be able to achieve what you want with your phone. For reference: From the standards for dual SIMs on GSM networks Dual SIM Dual Standby (DSDS): both ...


1

First, for apps that don't use the SIM card (i.e. everything but phone apps and the SMS system), it makes no difference at all. Most apps don't need to know or care how many SIM cards your phone support. Second, for the remaining apps, it depends on the Android version. Older Android versions didn't have support in the Android framework for multiple SIM ...


1

This is what worked for me. I've documented everything in a GitHub repository, and have included some of the information here. However, I will not be updating this information, and I cannot upload the supporting files, making the GitHub repository the go to resource for many reasons. With that said, here is the excerpt: Download files I've attached a few ...


1

What you need. Download MTK Droid Root & tools. A Windows computer. Have already set USB Debugging mode enabled on your device. A USB cable. Have setup ADB & Fasboot on your PC. Instructions. Connect your device to PC, then launch MTK Droid Root & Tools. Droid Root and Tools will detect your Android device. If your device is detected, you ...


1

Came across this when I had the same issue. A bit late for the OP, but another thing to look out for. If you go in to: Settings> Sim Cards> Preferred SIM for SMS messages> Select SIM card> Ask every time


1

For this I recommend using Skype Out. you can authorize skype to give your actual cell number as caller id when making a Skype Out call. I do this when travelling overseas, my outgoing calls say they are my US number. I let incoming calls just go to voice mail of my real cell phone number so I don't have to pay international fees, and immediately call people ...


1

As far as i know, the modem only exist one 4G. You can use it in both SIM (switch it) but you can't use both at the same time. Even if you're thinking using the first one is 4G and the last one is 3G, it won't work. It's dual-band not dual channel, and beside it will make your phone a lot thirstier than before and i'm pretty sure you don't want that.


Only top voted, non community-wiki answers of a minimum length are eligible