--- a/testing/taskcluster/tasks/branches/base_job_flags.yml
+++ b/testing/taskcluster/tasks/branches/base_job_flags.yml
@@ -80,18 +80,16 @@ flags:
     - linux64-mulet  # Firefox desktop - b2g gecko linux 64 bit
     - linux64-mulet-haz  # Firefox desktop - b2g gecko linux 64 bit, rooting hazard analysis
     - macosx64_gecko # b2g desktop osx 64 bit
     - win32_gecko    # b2g desktop win 32 bit
     - flame-kk       # b2g flame kitkat
     - flame-kk-eng   # b2g flame eng build
     - flame-kk-spark-eng
     - flame-kk-ota
-    - nexus-4
-    - nexus-4-eng
     - nexus-4-kk
     - nexus-4-kk-ota
     - nexus-4-kk-eng
     - nexus-5l
     - nexus-5l-ota
     - nexus-5l-eng
     - dolphin
     - dolphin-eng

--- a/testing/taskcluster/tasks/branches/base_jobs.yml
+++ b/testing/taskcluster/tasks/branches/base_jobs.yml
@@ -87,28 +87,16 @@ builds:
       opt:
         task: tasks/builds/b2g_flame_kk_eng.yml
   flame-kk-spark-eng:
     platforms:
       - b2g
     types:
       opt:
         task: tasks/builds/b2g_flame_kk_spark_eng.yml
-  nexus-4:
-    platforms:
-      - b2g
-    types:
-      opt:
-        task: tasks/builds/b2g_nexus_4_user.yml
-  nexus-4-eng:
-    platforms:
-      - b2g
-    types:
-      opt:
-        task: tasks/builds/b2g_nexus_4_eng.yml
   nexus-4-kk:
     platforms:
       - b2g
     types:
       opt:
         task: tasks/builds/b2g_nexus_4_kk_user.yml
   nexus-4-kk-eng:
     platforms:

deleted file mode 100644
--- a/testing/taskcluster/tasks/builds/b2g_nexus_4_eng.yml
+++ /dev/null
@@ -1,36 +0,0 @@
-$inherits:
-  from: 'tasks/builds/b2g_phone_eng_base.yml'
-  variables:
-    build_name: 'nexus-4-eng'
-    build_type: 'opt'
-task:
-  workerType: flame-kk
-  scopes:
-    - 'docker-worker:cache:level-{{level}}-{{project}}-build-nexus-4-eng'
-    - 'docker-worker:cache:level-{{level}}-{{project}}-build-nexus-4-eng-objdir-gecko'
-  metadata:
-    name: '[TC] B2G Nexus 4 Eng'
-  payload:
-    cache:
-      level-{{level}}-{{project}}-build-nexus-4-eng: /home/worker/object-folder
-      level-{{level}}-{{project}}-build-nexus-4-eng-objdir-gecko: /home/worker/objdir-gecko
-    env:
-      TARGET: 'nexus-4'
-      DEBUG: 0
-    command:
-      - >
-        checkout-gecko workspace &&
-        cd ./workspace/gecko/testing/taskcluster/scripts/phone-builder &&
-        buildbot_step 'Build' ./build-phone.sh $HOME/workspace
-  extra:
-    treeherderEnv:
-      - production
-      - staging
-    treeherder:
-      symbol: Be
-      groupSymbol: Nexus 4
-      groupName: Nexus 4 Device Image
-      machine:
-        platform: b2g-device-image
-    locations:
-      img: 'private/build/nexus-4.zip'

deleted file mode 100644
--- a/testing/taskcluster/tasks/builds/b2g_nexus_4_user.yml
+++ /dev/null
@@ -1,37 +0,0 @@
-$inherits:
-  from: 'tasks/builds/b2g_phone_base.yml'
-  variables:
-    build_name: 'nexus-4-user'
-    build_type: 'opt'
-task:
-  workerType: flame-kk
-  scopes:
-    - 'docker-worker:cache:level-{{level}}-{{project}}-build-nexus-4-user'
-    - 'docker-worker:cache:level-{{level}}-{{project}}-build-nexus-4-user-objdir-gecko'
-  metadata:
-    name: '[TC] B2G Nexus 4 User'
-
-  payload:
-    cache:
-      level-{{level}}-{{project}}-build-nexus-4-user: /home/worker/object-folder
-      level-{{level}}-{{project}}-build-nexus-4-user-objdir-gecko: /home/worker/objdir-gecko
-    env:
-      TARGET: 'nexus-4'
-      DEBUG: 0
-    command:
-      - >
-        checkout-gecko workspace &&
-        cd ./workspace/gecko/testing/taskcluster/scripts/phone-builder &&
-        buildbot_step 'Build' ./build-phone.sh $HOME/workspace
-  extra:
-    treeherderEnv:
-      - production
-      - staging
-    treeherder:
-      symbol: B
-      groupSymbol: Nexus 4
-      groupName: Nexus 4 Device Image
-      machine:
-        platform: b2g-device-image
-    locations:
-      img: 'private/build/nexus-4.zip'