Upgrade to 20th layer

app/js/lib/schema.tl.txt

@@ -419,6 +419,10 @@ account.privacyRules#554abb6f rules:Vector<PrivacyRule> users:Vector<User> = acc
 
 accountDaysTTL#b8d0afdf days:int = AccountDaysTTL;
 
+account.sentChangePhoneCode#a4f58c4c phone_code_hash:string send_call_timeout:int = account.SentChangePhoneCode;
+
+updateUserPhone#12b9417b user_id:int phone:string = Update;
+
 ---functions---
 
 invokeAfterMsg#cb9f372d {X:Type} msg_id:long query:!X = X;
@@ -548,3 +552,8 @@ account.getAccountTTL#8fc711d = AccountDaysTTL;
 account.setAccountTTL#2442485e ttl:AccountDaysTTL = Bool;
 
 invokeWithLayer#da9b0d0d {X:Type} layer:int query:!X = X;
+
+contacts.resolveUsername#bf0131c username:string = User;
+
+account.sendChangePhoneCode#a407a8f4 phone_number:string = account.SentChangePhoneCode;
+account.changePhone#70c32edb phone_number:string phone_code_hash:string phone_code:string = User;