I am a Telenor / Vodafone user. I am able to send text messages to all the numbers except one. It is showing error code: 38 ?

I was getting same problem with uninor sim.. Follow this

1) You can also see video for easy solution:

https://youtu.be/X-H07Ob5-S0

or

2) Follow below:

Type code *#*#4636#*#* and dial from same sim then

This will popup :

Now we chose first option: Phone info

Next

Right after SMSC option if u see blank space then Enter the (In double “”) sim message center number which is unique for each telecom company as I have mentioned for uninor.

+91908405******.

(search on web about different sim message center number)

After writing number in “” click on update.. Then on refresh. (if it fails then it means u have not typed number in right way)

Its done.. Close and now try to send sms .