diff --git a/src/TinyGsmClientA6.h b/src/TinyGsmClientA6.h
index c254623..e10d495 100644
--- a/src/TinyGsmClientA6.h
+++ b/src/TinyGsmClientA6.h
@@ -112,7 +112,7 @@ public:
 
   virtual int available() {
     TINY_GSM_YIELD();
-    if (!rx.size() && sock_connected) {
+    if (!rx.size()) {
       at->maintain();
     }
     return rx.size();
@@ -191,7 +191,7 @@ public:
     if (waitResponse() != 1) {
       return false;
     }
-    sendAT(GF("+CMEE=0"));  // Turn of verbose errors
+    sendAT(GF("+CMEE=0"));  // Turn off verbose errors
     waitResponse();
     sendAT(GF("+CMER=3,0,0,2"));  // Set unsolicited result code output destination
     waitResponse();
diff --git a/src/TinyGsmClientBG96.h b/src/TinyGsmClientBG96.h
index efa8d0d..f240e37 100644
--- a/src/TinyGsmClientBG96.h
+++ b/src/TinyGsmClientBG96.h
@@ -112,7 +112,7 @@ public:
 
   virtual int available() {
     TINY_GSM_YIELD();
-    if (!rx.size() && sock_connected) {
+    if (!rx.size()) {
       at->maintain();
     }
     return rx.size() + sock_available;
diff --git a/src/TinyGsmClientESP8266.h b/src/TinyGsmClientESP8266.h
index 6e7fda5..1fb87e6 100644
--- a/src/TinyGsmClientESP8266.h
+++ b/src/TinyGsmClientESP8266.h
@@ -109,7 +109,7 @@ public:
 
   virtual int available() {
     TINY_GSM_YIELD();
-    if (!rx.size() && sock_connected) {
+    if (!rx.size()) {
       at->maintain();
     }
     return rx.size();
diff --git a/src/TinyGsmClientM95.h b/src/TinyGsmClientM95.h
index 1e132c7..93c9f0d 100644
--- a/src/TinyGsmClientM95.h
+++ b/src/TinyGsmClientM95.h
@@ -112,7 +112,7 @@ public:
 
   virtual int available() {
     TINY_GSM_YIELD();
-    if (!rx.size() && sock_connected) {
+    if (!rx.size()) {
       at->maintain();
     }
     return rx.size() + sock_available;
diff --git a/src/TinyGsmClientMC60.h b/src/TinyGsmClientMC60.h
index fd67780..1c2422e 100644
--- a/src/TinyGsmClientMC60.h
+++ b/src/TinyGsmClientMC60.h
@@ -116,7 +116,7 @@ public:
 
   virtual int available() {
     TINY_GSM_YIELD();
-    if (!rx.size() && sock_connected) {
+    if (!rx.size()) {
       at->maintain();
     }
     return rx.size() + sock_available;
diff --git a/src/TinyGsmClientSIM800.h b/src/TinyGsmClientSIM800.h
index a23ec5a..a0990cc 100644
--- a/src/TinyGsmClientSIM800.h
+++ b/src/TinyGsmClientSIM800.h
@@ -118,11 +118,11 @@ public:
 
   virtual int available() {
     TINY_GSM_YIELD();
-    if (!rx.size() && sock_connected) {
+    if (!rx.size()) {
       // Workaround: sometimes SIM800 forgets to notify about data arrival.
       // TODO: Currently we ping the module periodically,
       // but maybe there's a better indicator that we need to poll
-      if (millis() - prev_check > 500) {
+      if (millis() - prev_check > 250) {
         got_data = true;
         prev_check = millis();
       }
@@ -147,7 +147,7 @@ public:
       // Workaround: sometimes SIM800 forgets to notify about data arrival.
       // TODO: Currently we ping the module periodically,
       // but maybe there's a better indicator that we need to poll
-      if (millis() - prev_check > 500)  {
+      if (millis() - prev_check > 250)  {
         got_data = true;
         prev_check = millis();
       }
diff --git a/src/TinyGsmClientUBLOX.h b/src/TinyGsmClientUBLOX.h
index 2a2aa2e..ec58d25 100644
--- a/src/TinyGsmClientUBLOX.h
+++ b/src/TinyGsmClientUBLOX.h
@@ -110,7 +110,7 @@ public:
 
   virtual int available() {
     TINY_GSM_YIELD();
-    if (!rx.size() && sock_connected) {
+    if (!rx.size()) {
       at->maintain();
     }
     return rx.size() + sock_available;