Dual SIM phones come in two types: Dual SIM Dual Active (DSDA) and Dual SIM Dual Standby (DSDS). In a DSDA phone, both SIM cards can be active simultaneously, meaning that each SIM has dedicated radio frequency components such as radio front ends and antennas. On the other hand, in a DSDS phone, both SIM cards share the same RF components.
If you are using a DSDS phone and are on a call using SIM 1, you won’t be able to receive calls or use internet services using SIM 2. If someone tries to call you on SIM 2, they may receive a “not reachable” message or a blank tone.
If you frequently receive long-duration calls, it’s a good idea to ask your cellular service provider to forward calls between different SIM numbers. This way, you’ll be notified if someone tries to reach you on the other SIM number. Most smartphone manufacturers include this feature in the phone’s SIM manager settings to make it easy to set up.
With a DSDA phone, both SIM cards can be used simultaneously to make calls and access the internet. If someone tries to reach you on SIM 2 while you’re on a call on SIM 1, you’ll hear a regular beep and they’ll be informed that you’re busy on another call. Additionally, if you need to switch from SIM 1 to SIM 2 during a call, you can do so without interrupting SIM 2’s internet service. This can be useful if you’re using SIM 2 to feed an external device.
What is the impact of DSDA connectivity on battery life?
There is also a battery penalty associated with DSDA. Keeping two SIM cards active was impractical in the early days of smartphones due to RF battery drain.
During the last few years, chipset makers have concentrated on improving our smartphone SoCs’ power efficiency, making it possible to run two SIM cards simultaneously without draining the battery.
So, that’s all we have for you on whether Oneplus 12 supports DSA or is it a DSDS. I hope you find this article valuable. For more such content, comment below and let us know.
