Dual Active and Dual Standby Phones(DSDA) – Two Active SIM

Which is a type of mobile phone that can support two active SIM cards instantaneously. This means both SIM cards are active simultaneously, and you can take calls or messages on either SIM card without switching between them manually.

In contrast, Dual SIM Dual Standby (DSDS) phones only allow one SIM card to be active at a time, and the other SIM card is in standby mode. Therefore, when you receive a call or message on the active SIM, the other SIM becomes inactive until you switch back to it manually.

DSDA phones are becoming more popular because they offer greater flexibility and convenience for users who need to manage multiple phone numbers, including people who travel frequently or have both personal and work numbers.

Many smartphone manufacturers now offer DSDA phones as part of their product line, including Samsung, Huawei, Xiaomi, and OnePlus. However, the availability of DSDA phones may vary by region, and it’s important to check with your local carrier to ensure that the phone supports the bands and frequencies used in your area.

Overall, DSDA phones are a convenient option for people who need to manually manage multiple phone numbers without switching between SIM cards, and they are increasingly popular among smartphone users.

Dual Active phones

Dual Active phones represent DSDA phones (Dual SIM Dual Active), allowing both SIM cards to be active at the same time. This means you can receive calls or messages on either SIM card without manually switching between them. Here we have some of the pros and cons of using a Dual Active phone:

Types of Dual Active Phones:

  • Dual Active-Standby (DAS) Phones: These phones allow both SIM cards to remain active simultaneously, but only one can be used for calls or data at a time. The other SIM card remains in standby mode.
  • Dual Active Dual VoLTE (DADV) Phones: These phones support two active SIM cards, and both can be instantaneously used for voice-over LTE (VoLTE) calls. This means that you can utilize one SIM card for calls and the other for data at the same time.
  • Dual Active Dual 5G (DAD5G) Phones: These phones are designed to support two active 5G SIM cards simultaneously, permitting users to access high-speed 5G networks on both SIM cards instantaneously.


  • Convenience: With a Dual Active phone, you can receive calls & messages on both SIM cards without switching between them. This is particularly useful if you have a work number and a personal number, as you can keep both SIMs active at the same time.
  • Flexibility: Dual Active phones offer greater flexibility than Dual Standby phones, which only allow one SIM card to be active at a time. This represents that you can make or receive calls on either SIM card without having to switch back and forth.
  • Cost-effective: Dual Active phones can be cost-effective for people who travel regularly or have family and friends in diverse countries. By using a local SIM card in each country, you can avoid paying high roaming charges or buying multiple phones.


  • Inconvenience: You need to manually switch between SIM cards when you want to use a different number, which can be inconvenient if you need to switch frequently.
  • Limited functionality: You can only use one SIM card at a time, which means you can’t receive calls or messages on the other number when using the active SIM card.
  • Limited availability: Dual Standby phones may not be as widely available as Dual Active phones, particularly in certain regions or from certain manufacturers.
  • Overall, Dual Standby phones can be a good option if you need to manage multiple phone numbers, but they may have some drawbacks regarding convenience and functionality. If you need to receive calls or messages on both numbers simultaneously, a Dual Active phone may be a better option for you.

DSDA phone – Dual Active and Dual Standby Phones: Which one is better?

Dual Active (DA) and Dual Standby (DS) phones have their own advantages & disadvantages, so it depends on your specific needs and usage patterns to determine which one is better for you.

Dual Active phones have two active SIM slots, which means that you can receive calls on both SIM cards simultaneously. This is useful if you must simultaneously utilize two phone numbers, such as for work and personal use. With a DA phone, you can take a call on one number without interrupting the other.

Eventually, Dual Standby phones even have two SIM slots, but only one can be active at a time. The other SIM will be in standby mode, meaning you cannot receive calls or messages on it while the active SIM is in use. You can switch between the two SIMs manually, but you cannot use them simultaneously.

Regarding battery life, Dual Standby phones usually consume less power than Dual Active phones because they only have one active SIM at a time. Dual Active phones must power both SIMs simultaneously, which can drain the battery faster.


Finally, if you need to use two phone numbers simultaneously and want to receive calls on both numbers without interruption, then a Dual Active phone may be the better choice for you. However, a Dual Standby phone may be more suitable if you do not require both SIMs simultaneously and wish for a longer battery life.