diff --git a/app/src/main/java/com/tangem/presentation/activity/ConfirmPaymentActivity.kt b/app/src/main/java/com/tangem/presentation/activity/ConfirmPaymentActivity.kt
index 8d218028a1..b0edd9bbcf 100644
--- a/app/src/main/java/com/tangem/presentation/activity/ConfirmPaymentActivity.kt
+++ b/app/src/main/java/com/tangem/presentation/activity/ConfirmPaymentActivity.kt
@@ -19,10 +19,7 @@ import com.tangem.data.network.model.InfuraResponse
 import com.tangem.data.network.ElectrumRequest
 import com.tangem.domain.cardReader.NfcManager
 import com.tangem.domain.wallet.*
-import com.tangem.util.BTCUtils
-import com.tangem.util.DerEncodingUtil
-import com.tangem.util.FormatUtil
-import com.tangem.util.Util
+import com.tangem.util.*
 import com.tangem.wallet.R
 import kotlinx.android.synthetic.main.activity_confirm_payment.*
 import org.json.JSONException
@@ -342,11 +339,19 @@ class ConfirmPaymentActivity : AppCompatActivity(), NfcAdapter.ReaderCallback {
     }
 
     private fun requestElectrum(card: TangemCard, electrumRequest: ElectrumRequest) {
-        serverApiHelperElectrum!!.electrumRequestData(card, electrumRequest)
+        if (UtilHelper.isOnline(this)) {
+            serverApiHelperElectrum!!.electrumRequestData(card, electrumRequest)
+        } else {
+            Toast.makeText(this, getString(R.string.no_connection), Toast.LENGTH_SHORT).show()
+        }
     }
 
     private fun requestInfura(method: String) {
-        serverApiHelper!!.infura(method, 67, card!!.wallet, "", "")
+        if (UtilHelper.isOnline(this)) {
+            serverApiHelper!!.infura(method, 67, card!!.wallet, "", "")
+        } else {
+            Toast.makeText(this, getString(R.string.no_connection), Toast.LENGTH_SHORT).show()
+        }
     }
 
     public override fun onResume() {
diff --git a/app/src/main/java/com/tangem/presentation/activity/SendTransactionActivity.kt b/app/src/main/java/com/tangem/presentation/activity/SendTransactionActivity.kt
index df4b105ccf..718b256cc3 100644
--- a/app/src/main/java/com/tangem/presentation/activity/SendTransactionActivity.kt
+++ b/app/src/main/java/com/tangem/presentation/activity/SendTransactionActivity.kt
@@ -16,12 +16,13 @@ import com.tangem.domain.cardReader.NfcManager
 import com.tangem.domain.wallet.Blockchain
 import com.tangem.domain.wallet.CoinEngineFactory
 import com.tangem.domain.wallet.TangemCard
+import com.tangem.util.UtilHelper
 import com.tangem.wallet.R
 import org.json.JSONException
 import java.io.IOException
 import java.math.BigInteger
 
-class SendTransactionActivity : AppCompatActivity(), NfcAdapter.ReaderCallback  {
+class SendTransactionActivity : AppCompatActivity(), NfcAdapter.ReaderCallback {
 
     companion object {
         const val EXTRA_UID: String = "UID"
@@ -156,11 +157,19 @@ class SendTransactionActivity : AppCompatActivity(), NfcAdapter.ReaderCallback
     }
 
     private fun requestInfura(method: String, contract: String) {
-        serverApiHelper!!.infura(method, 67, card!!.wallet, contract, tx)
+        if (UtilHelper.isOnline(this)) {
+            serverApiHelper!!.infura(method, 67, card!!.wallet, contract, tx)
+        } else {
+            Toast.makeText(this, getString(R.string.no_connection), Toast.LENGTH_SHORT).show()
+        }
     }
 
     private fun requestElectrum(card: TangemCard, electrumRequest: ElectrumRequest) {
-        serverApiHelperElectrum!!.electrumRequestData(card, electrumRequest)
+        if (UtilHelper.isOnline(this)) {
+            serverApiHelperElectrum!!.electrumRequestData(card, electrumRequest)
+        } else {
+            Toast.makeText(this, getString(R.string.no_connection), Toast.LENGTH_SHORT).show()
+        }
     }
 
     fun finishWithError(message: String) {
diff --git a/app/src/main/java/com/tangem/presentation/fragment/LoadedWallet.kt b/app/src/main/java/com/tangem/presentation/fragment/LoadedWallet.kt
index 871fb74a20..807442889c 100644
--- a/app/src/main/java/com/tangem/presentation/fragment/LoadedWallet.kt
+++ b/app/src/main/java/com/tangem/presentation/fragment/LoadedWallet.kt
@@ -296,7 +296,6 @@ class LoadedWallet : Fragment(), NfcAdapter.ReaderCallback, CardProtocol.Notific
 
         // request card verify listener
         serverApiHelper!!.setCardVerifyAndGetInfoListener {
-
             requestCounter--
             if (requestCounter == 0) srl.isRefreshing = false
 
@@ -497,9 +496,11 @@ class LoadedWallet : Fragment(), NfcAdapter.ReaderCallback, CardProtocol.Notific
     }
 
     private fun requestCardVerify() {
-        if ((card!!.isOnlineVerified == null || !card!!.isOnlineVerified)) {
-            requestCounter++
-            serverApiHelper!!.cardVerifyAndGetInfo(card)
+        if (UtilHelper.isOnline(activity!!)) {
+            if ((card!!.isOnlineVerified == null || !card!!.isOnlineVerified)) {
+                requestCounter++
+                serverApiHelper!!.cardVerifyAndGetInfo(card)
+            }
         } else {
             Toast.makeText(activity!!, getString(R.string.no_connection), Toast.LENGTH_SHORT).show()
             srl.isRefreshing = false