make sure we use the proper letter at the contact colored avatar

app/src/main/kotlin/com/simplemobiletools/contacts/pro/adapters/ContactsAdapter.kt

@@ -290,12 +290,7 @@ class ContactsAdapter(activity: SimpleActivity, var contactItems: ArrayList<Cont
             contact_tmb.beVisibleIf(showContactThumbnails)
 
             if (showContactThumbnails) {
-                val avatarName = when {
-                    contact.isABusinessContact() -> contact.getFullCompany()
-                    config.startNameWithSurname -> contact.surname
-                    else -> contact.firstName
-                }
-
+                val avatarName = contact.getAvatarLetterName(context)
                 val placeholderImage = BitmapDrawable(resources, context.getContactLetterIcon(avatarName))
                 if (contact.photoUri.isEmpty() && contact.photo == null) {
                     contact_tmb.setImageDrawable(placeholderImage)

app/src/main/kotlin/com/simplemobiletools/contacts/pro/fragments/MyViewPagerFragment.kt

@@ -242,17 +242,7 @@ abstract class MyViewPagerFragment(context: Context, attributeSet: AttributeSet)
     private fun setupLetterFastscroller(contacts: ArrayList<Contact>) {
         letter_fastscroller.setupWithRecyclerView(fragment_list, { position ->
             try {
-                val contact = contacts[position]
-                var name = when {
-                    contact.isABusinessContact() -> contact.getFullCompany()
-                    config.startNameWithSurname -> contact.surname
-                    else -> contact.firstName
-                }
-
-                if (name.isEmpty() && contact.emails.isNotEmpty()) {
-                    name = contact.emails.first().value
-                }
-
+                val name = contacts[position].getAvatarLetterName(context)
                 var character = if (name.isNotEmpty()) name.substring(0, 1) else ""
                 if (!character.areLettersOnly()) {
                     character = "#"

app/src/main/kotlin/com/simplemobiletools/contacts/pro/models/Contact.kt

@@ -1,11 +1,13 @@
 package com.simplemobiletools.contacts.pro.models
 
+import android.content.Context
 import android.graphics.Bitmap
 import android.telephony.PhoneNumberUtils
 import com.simplemobiletools.commons.extensions.normalizeString
 import com.simplemobiletools.commons.helpers.SORT_BY_FIRST_NAME
 import com.simplemobiletools.commons.helpers.SORT_BY_MIDDLE_NAME
 import com.simplemobiletools.commons.helpers.SORT_DESCENDING
+import com.simplemobiletools.contacts.pro.extensions.config
 import com.simplemobiletools.contacts.pro.extensions.normalizeNumber
 import com.simplemobiletools.contacts.pro.helpers.SMT_PRIVATE
 
@@ -140,4 +142,22 @@ data class Contact(var id: Int, var prefix: String, var firstName: String, var m
     fun isPrivate() = source == SMT_PRIVATE
 
     fun getSignatureKey() = if (photoUri.isNotEmpty()) photoUri else hashCode()
+
+    fun getAvatarLetterName(context: Context): String {
+        var name = when {
+            isABusinessContact() -> getFullCompany()
+            context.config.startNameWithSurname -> surname
+            else -> firstName
+        }
+
+        if (name.isEmpty() && emails.isNotEmpty()) {
+            name = emails.first().value
+        }
+
+        if (name.isEmpty()) {
+            name = getNameToDisplay()
+        }
+
+        return name
+    }
 }