<div id="avatar_profile">
  <% if subject == current_subject %>

    <%= link_to image_tag(subject.logo.url(:medium), :alt => subject.name , :size => "150x150", :id => "current_avatar_img"), subject %>    
    <div class="logo_menu logo_caption">    
      <%= link_to t('avatar.profile_change'), polymorphic_path([subject, :profile], section: :avatar)  %>       
    </div>        
  <% else %>
    <%= link_to image_tag(subject.logo.url, :alt => subject.name , :size => "150x150"), subject %>
  <% end %>
</div>
<div class= "subject-name-phone">
     <%= subject.name %>
   </div>

<div id="avatar_profile">
  <%= link_to image_tag(subject.logo.url(:medium), :alt => subject.name , :size => "150x150"), subject %>

  <% if subject == current_subject %>
    <div class="logo_menu logo_caption">    
      <%= link_to t('avatar.profile_change'), polymorphic_path([subject, :profile], section: :avatar)  %>
    </div>        
  <% end %>
</div>

<div class= "subject-name-phone">
  <%= subject.name %>
</div>

Use medium size in profile avatar
Use medium size in profile avatar
