How do I lock into this band 7 using AT command?

My modem ec25 keep switching to band 3 very slow speed and it happens often I want to lock into band 7 it gives me faster speed.

Below is the band 7 info, What is my next command to lock into this cell tower band 7?

AT+QENG=“SERVINGCELL”
+QENG: “servingcell”,“NOCONN”,“LTE”,“FDD”,456,08,EB2116,141,2800,7,3,3,A461,-99,-7,-73,14,-

OK

Thank you!

Dear Crypto Fan,
Thanks for your inquiry in Quectel forum.
If you want to lock band 7, you can use the following AT command. Thanks!
1.Please use AT command AT+QCFG=“BAND” to check the default band setting;
2.Then use AT+QCFG=“BAND”,00,40,00; // lock to LTE BAND7
3.After finished the test, it is better to reset the band to the default value. Thanks!

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Hi Kyson,
Thank you so much. Last question how do I reset the modem to default is it command with ATI or AT&F?

Dear Cryto Fan,
You need to use AT+QCFG=“BAND” to reset it to the default value. So you need to check the default value before you lock it to BAND 7, then after test, use the above command to reset again. Thanks!

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Ok Thank you so much Kyson.