diff --git a/app/models.py b/app/models.py
index 86d5e664..3bbd8f88 100644
--- a/app/models.py
+++ b/app/models.py
@@ -413,6 +413,14 @@ class User(Base, ModelMixin, UserMixin, PasswordOracle):
         sa.Boolean, default=False, nullable=False, server_default="0"
     )
 
+    # user can use the phone feature
+    can_use_phone = sa.Column(
+        sa.Boolean, default=False, nullable=False, server_default="0"
+    )
+
+    # in minutes
+    phone_quota = sa.Column(sa.Integer, nullable=True)
+
     @property
     def directory_quota(self):
         return min(
@@ -2679,3 +2687,56 @@ class DeletedSubdomain(Base, ModelMixin):
     __tablename__ = "deleted_subdomain"
 
     domain = sa.Column(sa.String(128), unique=True, nullable=False)
+
+
+# region Phone
+class PhoneCountry(Base, ModelMixin):
+    __tablename__ = "phone_country"
+
+    name = sa.Column(sa.String(128), unique=True, nullable=False)
+
+
+class PhoneNumber(Base, ModelMixin):
+    __tablename__ = "phone_number"
+
+    country_id = sa.Column(
+        sa.ForeignKey(PhoneCountry.id, ondelete="cascade"), nullable=False
+    )
+
+    # with country code, e.g. +33612345678
+    number = sa.Column(sa.String(128), unique=True, nullable=False)
+
+    active = sa.Column(sa.Boolean, nullable=False, default=True)
+
+    country = orm.relationship(PhoneCountry)
+
+
+class PhoneReservation(Base, ModelMixin):
+    __tablename__ = "phone_reservation"
+
+    number_id = sa.Column(
+        sa.ForeignKey(PhoneNumber.id, ondelete="cascade"), nullable=False
+    )
+
+    user_id = sa.Column(sa.ForeignKey(User.id, ondelete="cascade"), nullable=False)
+
+    number = orm.relationship(PhoneNumber)
+
+    start = sa.Column(ArrowType, nullable=False)
+    end = sa.Column(ArrowType, nullable=False)
+
+
+class PhoneMessage(Base, ModelMixin):
+    __tablename__ = "phone_message"
+
+    number_id = sa.Column(
+        sa.ForeignKey(PhoneNumber.id, ondelete="cascade"), nullable=False
+    )
+
+    from_number = sa.Column(sa.String(128), nullable=False)
+    body = sa.Column(sa.Text)
+
+    number = orm.relationship(PhoneNumber)
+
+
+# endregion
diff --git a/migrations/versions/2021_120216_ad467baf7ec8_.py b/migrations/versions/2021_120216_ad467baf7ec8_.py
new file mode 100644
index 00000000..9c009119
--- /dev/null
+++ b/migrations/versions/2021_120216_ad467baf7ec8_.py
@@ -0,0 +1,76 @@
+"""empty message
+
+Revision ID: ad467baf7ec8
+Revises: 4b483a762fed
+Create Date: 2021-12-02 16:32:50.884324
+
+"""
+import sqlalchemy_utils
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = 'ad467baf7ec8'
+down_revision = '4b483a762fed'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.create_table('phone_country',
+    sa.Column('id', sa.Integer(), autoincrement=True, nullable=False),
+    sa.Column('created_at', sqlalchemy_utils.types.arrow.ArrowType(), nullable=False),
+    sa.Column('updated_at', sqlalchemy_utils.types.arrow.ArrowType(), nullable=True),
+    sa.Column('name', sa.String(length=128), nullable=False),
+    sa.PrimaryKeyConstraint('id'),
+    sa.UniqueConstraint('name')
+    )
+    op.create_table('phone_number',
+    sa.Column('id', sa.Integer(), autoincrement=True, nullable=False),
+    sa.Column('created_at', sqlalchemy_utils.types.arrow.ArrowType(), nullable=False),
+    sa.Column('updated_at', sqlalchemy_utils.types.arrow.ArrowType(), nullable=True),
+    sa.Column('country_id', sa.Integer(), nullable=False),
+    sa.Column('number', sa.String(length=128), nullable=False),
+    sa.Column('active', sa.Boolean(), nullable=False),
+    sa.ForeignKeyConstraint(['country_id'], ['phone_country.id'], ondelete='cascade'),
+    sa.PrimaryKeyConstraint('id'),
+    sa.UniqueConstraint('number')
+    )
+    op.create_table('phone_message',
+    sa.Column('id', sa.Integer(), autoincrement=True, nullable=False),
+    sa.Column('created_at', sqlalchemy_utils.types.arrow.ArrowType(), nullable=False),
+    sa.Column('updated_at', sqlalchemy_utils.types.arrow.ArrowType(), nullable=True),
+    sa.Column('number_id', sa.Integer(), nullable=False),
+    sa.Column('from_number', sa.String(length=128), nullable=False),
+    sa.Column('body', sa.Text(), nullable=True),
+    sa.ForeignKeyConstraint(['number_id'], ['phone_number.id'], ondelete='cascade'),
+    sa.PrimaryKeyConstraint('id')
+    )
+    op.create_table('phone_reservation',
+    sa.Column('id', sa.Integer(), autoincrement=True, nullable=False),
+    sa.Column('created_at', sqlalchemy_utils.types.arrow.ArrowType(), nullable=False),
+    sa.Column('updated_at', sqlalchemy_utils.types.arrow.ArrowType(), nullable=True),
+    sa.Column('number_id', sa.Integer(), nullable=False),
+    sa.Column('user_id', sa.Integer(), nullable=False),
+    sa.Column('start', sqlalchemy_utils.types.arrow.ArrowType(), nullable=False),
+    sa.Column('end', sqlalchemy_utils.types.arrow.ArrowType(), nullable=False),
+    sa.ForeignKeyConstraint(['number_id'], ['phone_number.id'], ondelete='cascade'),
+    sa.ForeignKeyConstraint(['user_id'], ['users.id'], ondelete='cascade'),
+    sa.PrimaryKeyConstraint('id')
+    )
+    op.add_column('users', sa.Column('can_use_phone', sa.Boolean(), server_default='0', nullable=False))
+    op.add_column('users', sa.Column('phone_quota', sa.Integer(), nullable=True))
+    # ### end Alembic commands ###
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_column('users', 'phone_quota')
+    op.drop_column('users', 'can_use_phone')
+    op.drop_table('phone_reservation')
+    op.drop_table('phone_message')
+    op.drop_table('phone_number')
+    op.drop_table('phone_country')
+    # ### end Alembic commands ###