diff --git a/Classes/ChatConversationCreateView.m b/Classes/ChatConversationCreateView.m
index 0483a5d0e..8774adccd 100644
--- a/Classes/ChatConversationCreateView.m
+++ b/Classes/ChatConversationCreateView.m
@@ -240,10 +240,10 @@ typedef enum { ContactsAll, ContactsLinphone, ContactsMAX } ContactsCategory;
 	cell.controller = self;
 	cell.uri = uri;
 	LinphoneAddress *addr = NULL;
-	LinphoneProxyConfig *cfg = linphone_core_get_default_proxy_config(LC);
-	if (cfg && linphone_proxy_config_is_phone_number(cfg, uri.UTF8String)) {
-		char *phone = linphone_proxy_config_normalize_phone_number(cfg, uri.UTF8String);
-		addr = linphone_proxy_config_normalize_sip_uri(cfg, phone);
+	LinphoneAccount *account = linphone_core_get_default_account(LC);
+	if (account && linphone_account_is_phone_number(account, uri.UTF8String)) {
+		char *phone = linphone_account_normalize_phone_number(account, uri.UTF8String);
+		addr = linphone_account_normalize_sip_uri(account, phone);
 		ms_free(phone);
 	} else
 		addr = linphone_address_new(uri.UTF8String);
diff --git a/Classes/ContactDetailsView.m b/Classes/ContactDetailsView.m
index 4119c8a57..be1f6a24f 100644
--- a/Classes/ContactDetailsView.m
+++ b/Classes/ContactDetailsView.m
@@ -153,7 +153,7 @@
 	if (([username rangeOfString:@"@"].length > 0) &&
 		([LinphoneManager.instance lpConfigBoolForKey:@"show_contacts_emails_preference"] == true)) {
 		[_tableController addEmailField:username];
-	} else if ((linphone_proxy_config_is_phone_number(NULL, [username UTF8String])) &&
+	} else if ((linphone_account_is_phone_number(NULL, [username UTF8String])) &&
 			   ([LinphoneManager.instance lpConfigBoolForKey:@"save_new_contacts_as_phone_number"] == true)) {
 		[_tableController addPhoneField:username];
 	} else {
diff --git a/Classes/LinphoneCoreSettingsStore.m b/Classes/LinphoneCoreSettingsStore.m
index 3a652ffcc..cb993f0a5 100644
--- a/Classes/LinphoneCoreSettingsStore.m
+++ b/Classes/LinphoneCoreSettingsStore.m
@@ -969,7 +969,7 @@
 	if (isDefault) {
 		// if we removed the default proxy config, set another one instead
 		if (linphone_core_get_proxy_config_list(LC) != NULL) {
-			linphone_core_set_default_proxy_index(LC, 0);
+			linphone_core_set_default_proxy_config(LC, (LinphoneProxyConfig *)(linphone_core_get_proxy_config_list(LC)->data));
 		}
 	}
 	[self transformLinphoneCoreToKeys];
diff --git a/Classes/LinphoneUI/UIContactDetailsCell.m b/Classes/LinphoneUI/UIContactDetailsCell.m
index d3ce7071e..dd4acf9b1 100644
--- a/Classes/LinphoneUI/UIContactDetailsCell.m
+++ b/Classes/LinphoneUI/UIContactDetailsCell.m
@@ -45,9 +45,9 @@
 - (void)setAddress:(NSString *)address {
 	_addressLabel.text = _editTextfield.text = address;
 	char *normAddr = (char *)_addressLabel.text.UTF8String;
-	LinphoneProxyConfig *cfg = linphone_core_get_default_proxy_config(LC);
-	if(_addressLabel.text && cfg && linphone_proxy_config_is_phone_number(cfg, _addressLabel.text.UTF8String)) {
-		normAddr = linphone_proxy_config_normalize_phone_number(cfg,
+	LinphoneAccount *account = linphone_core_get_default_account(LC);
+	if(_addressLabel.text && account && linphone_account_is_phone_number(account, _addressLabel.text.UTF8String)) {
+		normAddr = linphone_account_normalize_phone_number(account,
 																_addressLabel.text.UTF8String);
 	}
 	LinphoneAddress *addr = linphone_core_interpret_url(LC, normAddr);
@@ -66,12 +66,12 @@
         
 		self.linphoneImage.hidden = [LinphoneManager.instance lpConfigBoolForKey:@"hide_linphone_contacts" inSection:@"app"] ||
 			!((model && linphone_presence_model_get_basic_status(model) == LinphonePresenceBasicStatusOpen) ||
-			  (cfg && !linphone_proxy_config_is_phone_number(cfg,
+			  (account && !linphone_account_is_phone_number(account,
 													  _addressLabel.text.UTF8String) &&
 			   [FastAddressBook isSipURIValid:_addressLabel.text]));
         ContactDetailsView *contactDetailsView = VIEW(ContactDetailsView);
         self.inviteButton.hidden = !ENABLE_SMS_INVITE || [[contactDetailsView.contact sipAddresses] count] > 0 || !self.linphoneImage.hidden;
-		[self shouldHideEncryptedChatView:cfg && linphone_proxy_config_get_conference_factory_uri(cfg) && model && linphone_presence_model_has_capability(model, LinphoneFriendCapabilityLimeX3dh)];
+		[self shouldHideEncryptedChatView:account && linphone_account_params_get_conference_factory_uri(linphone_account_get_params(account)) && model && linphone_presence_model_has_capability(model, LinphoneFriendCapabilityLimeX3dh)];
 	}
 
 	if (addr) {
@@ -97,10 +97,10 @@
 	}
 
 	char *normAddr = (char *)_addressLabel.text.UTF8String;
-	LinphoneProxyConfig *cfg = linphone_core_get_default_proxy_config(LC);
-	if (cfg && linphone_proxy_config_is_phone_number(cfg,
+	LinphoneAccount *account = linphone_core_get_default_account(LC);
+	if (account && linphone_account_is_phone_number(account,
 											  _addressLabel.text.UTF8String)) {
-		normAddr = linphone_proxy_config_normalize_phone_number(cfg,
+		normAddr = linphone_account_normalize_phone_number(account,
 																_addressLabel.text.UTF8String);
 	}
 	LinphoneAddress *addr = linphone_core_interpret_url(LC, normAddr);
@@ -109,7 +109,7 @@
 	Contact *contact = [FastAddressBook getContactWithAddress:(addr)];
 
 	if (contact) {
-		self.linphoneImage.hidden =[LinphoneManager.instance lpConfigBoolForKey:@"hide_linphone_contacts" inSection:@"app"] || ! ((contact.friend && linphone_presence_model_get_basic_status(linphone_friend_get_presence_model_for_uri_or_tel(contact.friend, _addressLabel.text.UTF8String)) == LinphonePresenceBasicStatusOpen) || (cfg && !linphone_proxy_config_is_phone_number(cfg, _addressLabel.text.UTF8String) && [FastAddressBook isSipURIValid:_addressLabel.text]));
+		self.linphoneImage.hidden =[LinphoneManager.instance lpConfigBoolForKey:@"hide_linphone_contacts" inSection:@"app"] || ! ((contact.friend && linphone_presence_model_get_basic_status(linphone_friend_get_presence_model_for_uri_or_tel(contact.friend, _addressLabel.text.UTF8String)) == LinphonePresenceBasicStatusOpen) || (account && !linphone_account_is_phone_number(account, _addressLabel.text.UTF8String) && [FastAddressBook isSipURIValid:_addressLabel.text]));
 	}
 	
 	if (addr) {
diff --git a/Classes/Utils/FastAddressBook.m b/Classes/Utils/FastAddressBook.m
index 9e58f69e3..57f88a018 100644
--- a/Classes/Utils/FastAddressBook.m
+++ b/Classes/Utils/FastAddressBook.m
@@ -516,7 +516,7 @@
 	LOGD(@"dumpContactsDisplayNamesToUserDefaults");
 	NSUserDefaults *defaults = [[NSUserDefaults alloc] initWithSuiteName:kLinphoneMsgNotificationAppGroupId];
 	__block NSDictionary *oldDisplayNames = [defaults dictionaryForKey:@"addressBook"];
-	LinphoneProxyConfig *cfg = linphone_core_get_default_proxy_config(LC);
+	LinphoneAccount *account = linphone_core_get_default_account(LC);
 
 	__block NSMutableDictionary *displayNames = [[NSMutableDictionary dictionary] init];
 	[_addressBookMap enumerateKeysAndObjectsUsingBlock:^(NSString *name, Contact *contact, BOOL *stop) {
@@ -524,7 +524,7 @@
 			NSString *key = name;
 			LinphoneAddress *addr = linphone_address_new(name.UTF8String);
 
-			if (addr && linphone_proxy_config_is_phone_number(cfg, linphone_address_get_username(addr))) {
+			if (addr && linphone_account_is_phone_number(account, linphone_address_get_username(addr))) {
 				if (oldDisplayNames[name] != nil && [FastAddressBook isSipURI:oldDisplayNames[name]]) {
 					NSString *addrForTel = [NSString stringWithString:oldDisplayNames[name]];
 					/* we keep the link between tel number and sip addr to have the information quickly.
@@ -583,7 +583,7 @@
 
 	if ([FastAddressBook isSipURI:uri]) {
 		LinphoneAddress *addr = linphone_address_new(uri.UTF8String);
-		if (linphone_proxy_config_is_phone_number(linphone_core_get_default_proxy_config(LC), linphone_address_get_username(addr))) {
+		if (linphone_account_is_phone_number(linphone_core_get_default_account(LC), linphone_address_get_username(addr))) {
 			telAddr = uri;
 		}
 		linphone_address_unref(addr);
diff --git a/Classes/Utils/Utils.m b/Classes/Utils/Utils.m
index dc72aef7c..054786af8 100644
--- a/Classes/Utils/Utils.m
+++ b/Classes/Utils/Utils.m
@@ -457,13 +457,13 @@
   	if (!value || [value isEqualToString:@""])
     	return NULL;
 
-  	LinphoneProxyConfig *cfg = linphone_core_get_default_proxy_config(LC);
+	LinphoneAccount *account = linphone_core_get_default_account(LC);
   	const char *normvalue;
-	normvalue = linphone_proxy_config_is_phone_number(cfg, value.UTF8String)
-	  	? linphone_proxy_config_normalize_phone_number(cfg, value.UTF8String)
+	normvalue = linphone_account_is_phone_number(account, value.UTF8String)
+	  	? linphone_account_normalize_phone_number(account, value.UTF8String)
 		: value.UTF8String;
 
-  	LinphoneAddress *addr = linphone_proxy_config_normalize_sip_uri(cfg, normvalue);
+  	LinphoneAddress *addr = linphone_account_normalize_sip_uri(account, normvalue);
   	// first try to find a friend with the given address
   	Contact *c = [FastAddressBook getContactWithAddress:addr];
 
@@ -484,10 +484,10 @@
 
 	// since user wants to escape plus, we assume it expects to have phone
 	// numbers by default
-	if (addr && cfg) {
-		const char *username = linphone_proxy_config_get_dial_escape_plus(cfg) ? normvalue : value.UTF8String;
-		if (linphone_proxy_config_is_phone_number(cfg, username))
-			linphone_address_set_username(addr, linphone_proxy_config_normalize_phone_number(cfg, username));
+	if (addr && account) {
+		const char *username = linphone_account_params_get_dial_escape_plus_enabled(linphone_account_get_params(account)) ? normvalue : value.UTF8String;
+		if (linphone_account_is_phone_number(account, username))
+			linphone_address_set_username(addr, linphone_account_normalize_phone_number(account, username));
 	 }
 	return addr;
 }
diff --git a/Podfile b/Podfile
index 6c7018096..8dfe253ea 100644
--- a/Podfile
+++ b/Podfile
@@ -5,7 +5,7 @@ source "https://github.com/CocoaPods/Specs.git"
 
 def all_pods
 	if ENV['PODFILE_PATH'].nil?
-		pod 'linphone-sdk', '4.5.0'
+		pod 'linphone-sdk', '~> 5.0.0-alpha'
 	else
 		pod 'linphone-sdk', :path => ENV['PODFILE_PATH']  # local sdk
 	end