How to avoid latency of SMS delivery at User/ handset Level?

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1. Kindly do not use second SIM for call while waiting for an OTP SMS in SIM1. We do observe latency issues more on Dual SIM handsets in compare to single SIM device.

2. Try to avoid handset busy scenarios while waiting for OTP SMS. It might reach to retry stage and latency might happen.

3. Sometime it is observed that using  WIFI network for Data creates issues with SIM network which causes SMS retry and latency.

4. User May try SMS OTP after handset restart if first attempt, SMS's are not received in timely manner.