diff --git a/rpgsaga/saga/src/IApplication.ts b/rpgsaga/saga/src/IApplication.ts
index 9c6c082..ff5f881 100644
--- a/rpgsaga/saga/src/IApplication.ts
+++ b/rpgsaga/saga/src/IApplication.ts
@@ -3,4 +3,4 @@ export interface IApplication {
   install(): void;
   run(): void;
   uninstall(): void;
-}
\ No newline at end of file
+}
diff --git a/rpgsaga/saga/src/android.ts b/rpgsaga/saga/src/android.ts
new file mode 100644
index 0000000..9de4782
--- /dev/null
+++ b/rpgsaga/saga/src/android.ts
@@ -0,0 +1,9 @@
+import { IAndroidApp } from './IAndroidApp';
+import { Smartphone } from './smartphone';
+
+export class Android extends Smartphone<IAndroidApp> {
+  installApp(app: IAndroidApp): void {
+    app.checkSecurity();
+    super.installApp(app);
+  }
+}
diff --git a/rpgsaga/saga/src/index.ts b/rpgsaga/saga/src/index.ts
index 2108b75..21dbdc8 100644
--- a/rpgsaga/saga/src/index.ts
+++ b/rpgsaga/saga/src/index.ts
@@ -3,8 +3,25 @@ import { CellPhone } from './cellphone';
 import { LandlinePhone } from './landlinephone';
 import { Babushkaphone } from './babushkaphone';
 import { Eshop } from './EShop';
+import { Smartphone } from './smartphone';
+import { IAndroidApp } from './IAndroidApp';
+import { Android } from './android';
+import { Keep } from './keep';
+import { IPhone } from './iphone';
+import { Telegram } from './telegram';
+
+const incYear = (phone: Phone): Phone => {
+  const res = new LandlinePhone(phone.phoneNumber, phone.year + 1, phone.name);
+  return res;
+};
 
 const first = new LandlinePhone('+7900-000 000 (123)', 1990, 'Телефон 1');
+console.log(incYear(first));
+
+const a = new LandlinePhone('+7900-000 000 (123)', 1990, 'Телефон 1');
+const b = first;
+console.log(b === first, a === first);
+
 first.year = 1998;
 
 try {
@@ -51,6 +68,8 @@ const phones: Array<Phone> = [cp2, cp1, first];
 for (const phone of phones) {
   console.log(phone.display());
 }
+phones.push(b);
+phones[1].name = 'aaaaaaa';
 
 const someReq = () => {
   throw new Error('Something bad happend');
@@ -70,3 +89,15 @@ shop.addStuff(cp1);
 shop.addStuff(cp2);
 shop.addStuff(first);
 shop.showStuff();
+
+const keep = new Keep();
+const tel = new Telegram();
+const samsung1 = new Android('+79000000000', 2010, 5, 'samsung');
+samsung1.installApp(keep);
+samsung1.installApp(tel);
+samsung1.runApp('Keep');
+samsung1.runApp('Telegram');
+
+const iphone15 = new IPhone('+79000000000', 2010, 5, 'apple');
+iphone15.installApp(tel);
+iphone15.runApp('Telegram');
diff --git a/rpgsaga/saga/src/iphone.ts b/rpgsaga/saga/src/iphone.ts
new file mode 100644
index 0000000..2af2fe4
--- /dev/null
+++ b/rpgsaga/saga/src/iphone.ts
@@ -0,0 +1,10 @@
+import { IAndroidApp } from './IAndroidApp';
+import { IIosApp } from './IIOsApp';
+import { Smartphone } from './smartphone';
+
+export class IPhone extends Smartphone<IIosApp> {
+  installApp(app: IIosApp): void {
+    app.checkSignature();
+    super.installApp(app);
+  }
+}
diff --git a/rpgsaga/saga/src/keep.ts b/rpgsaga/saga/src/keep.ts
new file mode 100644
index 0000000..f4be9ef
--- /dev/null
+++ b/rpgsaga/saga/src/keep.ts
@@ -0,0 +1,18 @@
+import { IAndroidApp } from './IAndroidApp';
+
+export class Keep implements IAndroidApp {
+  readonly name = 'Keep';
+  checkSecurity(): void {
+    console.log('Checking security for Android');
+  }
+
+  install(): void {
+    console.log(`Installing ${this.name}`);
+  }
+  run(): void {
+    console.log(`Running ${this.name}`);
+  }
+  uninstall(): void {
+    console.log(`Uninstalling ${this.name}`);
+  }
+}
diff --git a/rpgsaga/saga/src/smartphone.ts b/rpgsaga/saga/src/smartphone.ts
index f09da86..7d46add 100644
--- a/rpgsaga/saga/src/smartphone.ts
+++ b/rpgsaga/saga/src/smartphone.ts
@@ -1,11 +1,35 @@
 import { IApplication } from './IApplication';
 import { CellPhone } from './cellphone';
 
-export abstract class Smartphone extends CellPhone {
-  apps: IApplication[];
+export abstract class Smartphone<TApp extends IApplication> extends CellPhone {
+  apps: Set<TApp>;
 
   constructor(number: string, year: number, diagonal: number, public name?: string) {
     super(number, year, diagonal, name);
-    this.apps = [];
+    this.apps = new Set<TApp>();
+  }
+
+  installApp(app: TApp) {
+    app.install();
+    this.apps.add(app);
+  }
+
+  uninstallApp(name: string) {
+    for (const elem of this.apps) {
+      if (elem.name === name) {
+        elem.uninstall();
+        this.apps.delete(elem);
+        return;
+      }
+    }
+  }
+
+  runApp(name: string) {
+    for (const elem of this.apps) {
+      if (elem.name === name) {
+        elem.run();
+        return;
+      }
+    }
   }
 }
diff --git a/rpgsaga/saga/src/telegram.ts b/rpgsaga/saga/src/telegram.ts
new file mode 100644
index 0000000..e48ca0a
--- /dev/null
+++ b/rpgsaga/saga/src/telegram.ts
@@ -0,0 +1,22 @@
+import { IAndroidApp } from './IAndroidApp';
+import { IIosApp } from './IIOsApp';
+
+export class Telegram implements IAndroidApp, IIosApp {
+  checkSignature(): void {
+    console.log('Checking security for IPhone');
+  }
+  readonly name = 'Telegram';
+  checkSecurity(): void {
+    console.log('Checking security for Android');
+  }
+
+  install(): void {
+    console.log(`Installing ${this.name}`);
+  }
+  run(): void {
+    console.log(`Running ${this.name}`);
+  }
+  uninstall(): void {
+    console.log(`Uninstalling ${this.name}`);
+  }
+}
diff --git a/rpgsaga/saga/tsconfig.json b/rpgsaga/saga/tsconfig.json
index 03a0e5a..0134630 100644
--- a/rpgsaga/saga/tsconfig.json
+++ b/rpgsaga/saga/tsconfig.json
@@ -1,5 +1,6 @@
 {
     "compilerOptions": {
+        "target": "ES6",
         "types": ["jest", "node"]
     }
 }
\ No newline at end of file