How can we know if a dual sim mobile is also a dual 4G or dual LTE just from its specifications?

To determine if a dual SIM mobile phone supports dual 4G or dual LTE, you need to look for specific details in the phone's specifications:

Network Technology

Check if the phone supports 4G or LTE on both SIM slots. Look for terms like "Dual 4G," "Dual LTE," "4G+4G," or "LTE+LTE" in the network specifications. This indicates that both SIMs can use 4G or LTE networks simultaneously2.

SIM Slot Specifications

Ensure that the specifications mention both SIM slots supporting 4G or LTE. For example, the OnePlus 12R specifications state: "LTE/LTE-A: 4×4 MIMO, Supports up to DL Cat 19/UL Cat 18 (1800Mbps /200Mbps), depending on carrier support" and also mentions "Dual SIM (Dual nano-SIM slot)," which implies both SIMs can use LTE networks1.

Carrier Band Support

Verify that the phone supports the necessary LTE bands for both SIMs. If the specifications list multiple LTE bands (e.g., LTE-FDD, LTE-TDD) and do not restrict these bands to a single SIM, it suggests dual 4G or LTE capability13.

By checking these points in the phone's specifications, you can confirm whether a dual SIM phone also supports dual 4G or dual LTE.