diff --git a/vendor.prop b/vendor.prop
index 57fc857..89738d4 100644
--- a/vendor.prop
+++ b/vendor.prop
@@ -151,6 +151,7 @@ ro.vendor.extension_library=libqti-perfd-client.so
 
 # Radio
 persist.vendor.radio.custom_ecc=1
+persist.vendor.radio.mt_sms_ack=30
 persist.vendor.radio.procedure_bytes=SKIP
 persist.vendor.radio.rat_on=combine
 ro.telephony.default_network=33,33