Dual SIM models allow you to use two SIM cards in one device. This is handy if you have separate phone numbers for work and home or if you would like to use a local number while keeping your original number active when in a foreign country. There are three types of SIM card trays: Single SIM: 1 SIM card slot.
Having two SIM cards lets you keep calls and messages for two numbers separate. So you can give out your numbers to the appropriate people. Depending on the phone you can set it to prompt which number to call out on every time, or have defaults.
Your second SIM means you get two entirely separate bills. DISADVANTAGE: You might have to transfer it. Dual-SIM android cell phones are mostly designed international in nations like Chinese suppliers, because that's where they became popular.
A dual SIM phone lets you take advantage of the best deals when it comes to carriers. Often you will find that one carrier has great data rates, while another has better voice call or overall bundle deals. Using a dual SIM device lets you take advantage of both deals.
Dual SIM phones are ideal for people who travel frequently or who have jobs that require them to be in multiple locations. With two SIM cards, users don't have to worry about switching phones or carrying multiple devices when they are on the go.
You can't turn off one sim on a dual-sim phone by itself. Both Sims are affected when the phone is turned off. You can use either sim for data purposes when using mobile data.
Under Dual SIM Dual Active, both SIM cards are active at the same time. This allows you to make and receive phone calls from either SIM, at the same time. Even if you are on a phone call on one of the SIMs, you can receive a call coming in on the second SIM.
To put matters straight, Dual SIM phones have their own sets of benefits- at any rate it is better to carry 1 Dual SIM phone than 2 Single SIM phones – but the aggravated exposure to EMF radiation is a factor that needs to be taken into consideration.
In a single SIM card phone, you're locked to one network and will have to remove and insert a different SIM card to use another. But for a dual active SIM phone, you can have two different networks on the same phone and switch between them with ease. That's the main purpose of dual SIM phones.
No. With a dual sim phone, you set which card will be used for internet access. That card will be the one to have up to 4G network access, depending on the phone. As for the other sim, it will be stuck with 2G because the phone can't have 3G or 4G on both sims at the same.
In general, it is not possible to have two SIM cards with the same number, as each SIM card is assigned a unique International Mobile Subscriber Identity (IMSI). This IMSI acts as an identifier for your mobile network, and duplicate numbers can lead to conflicts and confusion in the system.
This can also be particularly useful for those users who have two job or roles, needing two separate phone numbers or travelling and need two separate numbers which will allow them to automatically switch between the two SIMs. Another popular use for Dual-SIM is for international network hopping.
The disadvantage of Dual SIM Dual Active phones is that these devices have two radio transceivers, one for each SIM card. It means that they consume more battery than regular Single SIM smartphones and they are more expensive to manufacture, leading to a higher price.
"The number you are calling is not reachable at the moment." You will hear this when you call from one sim to the second. The second sim is temporarily suspended and loses it's network during the call although you may not see it on the phone. Look for" Dual Sim, dual standby active" in the phone's specs page.
More Ways to Stop the Calls
You can also use the 'call barring' method. For that, open your phone app and tap on the 'menu overflow button' (three dots) in the top right corner of the screen (generally for Android devices, for other devices, it is different). Then tap on the Settings and click on Calls.
One of the very first signs of SIM hacking that you'll notice is a seemingly random text purporting to be from your network provider asking you to restart your device. This is usually a message sent from the hacker. Restarting the phone gives them a chance, whilst the phone is off, to steal your SIM details.
Active dual SIM smartphones have 2 antennas: one for each SIM card. In fact, it's two smartphones in one. This means Active SIM cards can work separately from each other, so you're available at all times on both SIM cards. If you're using the internet on SIM card A, you can still receive a call on SIM card B.
Monitor phone calls and texts: Once someone has access to your SIM card, they can monitor all incoming calls and text messages as well as intercept them before they reach your phone. This allows them to gain access to sensitive information such as passwords or private conversations.
Enabling Dual SIM reachability
Make sure you have enabled both SIM cards. Find and tap Settings > Network & Internet > SIM cards or Dual SIM > Dual SIM reachability. Drag the slider beside Dual SIM reachability to the right. The phone numbers of the two inserted SIM cards are entered automatically.
So if you have a spare mobile lying about, you can pop your extra card in and enjoy the benefits of 2 phones; if your mobile doesn't have a dual SIM card or you want a physical differentiation. Or you can simply opt for an E-SIM which makes switching a whole lot easier! Not sure what an E-SIM is?
SIM Cloning in basically creating a duplicate SIM from the original one. It is similar to SIM swapping. However this is a technically sophisticated technique, where software is used to copy the real SIM card.
A dual SIM phone is one that can have two active numbers, plans, or accounts. You get this convenience on one device because it can have two separate SIMs: A physical SIM: A plastic card inserted into your phone. An eSIM: A digital SIM downloaded to compatible devices.