diff --git a/packages/eas-cli/src/credentials/ios/actions/DeviceUtils.ts b/packages/eas-cli/src/credentials/ios/actions/DeviceUtils.ts
index 3697709e79..902b41c79f 100644
--- a/packages/eas-cli/src/credentials/ios/actions/DeviceUtils.ts
+++ b/packages/eas-cli/src/credentials/ios/actions/DeviceUtils.ts
@@ -39,14 +39,15 @@ export async function chooseDevicesAsync(
 ): Promise<AppleDevice[]> {
   const preselectedDeviceIdentifierSet = new Set(preselectedDeviceIdentifiers);
   const isSelected = (device: AppleDeviceFragment): boolean =>
-    preselectedDeviceIdentifierSet.size === 0 ||
     preselectedDeviceIdentifierSet.has(device.identifier);
   const { devices } = await promptAsync({
     type: 'multiselect',
     name: 'devices',
     selectionFormat: '<num> devices selected',
     message: 'Select devices for the ad hoc build:',
-    hint: '- Space to select. Return to submit',
+    hint:
+      '- / search. Enter applies search; Enter again submits. Space toggles; a toggles visible',
+    searchable: true,
     choices: allDevices.map(device => ({
       value: device,
       title: formatDeviceLabel(device),
diff --git a/packages/eas-cli/src/easMultiselect.ts b/packages/eas-cli/src/easMultiselect.ts
index 192674944a..44ed3572de 100644
--- a/packages/eas-cli/src/easMultiselect.ts
+++ b/packages/eas-cli/src/easMultiselect.ts
@@ -5,6 +5,15 @@ const noop = (): void => {};
 
 export type Question<T extends string = string> = PromptObject<T> & {
   selectionFormat?: string;
+  searchable?: boolean;
+};
+
+type EasMultiselectChoice = Choice & {
+  description?: string;
+  disabled?: boolean;
+  selected?: boolean;
+  title?: string;
+  value?: unknown;
 };
 
 /**
@@ -20,13 +29,24 @@ export type Question<T extends string = string> = PromptObject<T> & {
  *
  *   Short format is used when more than one option is selected.
  *
+ * @param searchable
+ *   Enables slash-prefixed text filtering. Press `/` to enter search, Enter to apply the
+ *   current search, and Escape to clear it.
+ *
  **/
 
 export default class EasMultiselect extends MultiselectPrompt {
+  private searchQuery = '';
+  private searchInputActive = false;
+  private readonly searchable: boolean;
+
   constructor(opts: Question) {
-    super(opts);
+    super({ ...opts, overrideRender: true });
     this.selectionFormat = opts.selectionFormat;
+    this.searchable = opts.searchable ?? false;
+    this.render();
   }
+
   override renderDoneOrInstructions(): string {
     if (this.done && this.selectionFormat && this.value) {
       const selectedOptionsCount = this.value.filter(e => e.selected).length;
@@ -35,8 +55,236 @@ export default class EasMultiselect extends MultiselectPrompt {
         return this.selectionFormat.replace('<num>', selectedOptionsCount.toString());
       }
     }
+    if (this.searchable && !this.done) {
+      return this.renderSearchablePromptStatus();
+    }
     return super.renderDoneOrInstructions();
   }
+
+  override renderOptions(_options: EasMultiselectChoice[]): string {
+    const visibleOptions = this.visibleOptions;
+    return super.renderOptions(visibleOptions);
+  }
+
+  override first(): void {
+    this.cursor = 0;
+    this.render();
+  }
+
+  override last(): void {
+    this.cursor = Math.max(this.visibleOptions.length - 1, 0);
+    this.render();
+  }
+
+  override next(): void {
+    const visibleOptionsCount = this.visibleOptions.length;
+    if (visibleOptionsCount === 0) {
+      return this.bell();
+    }
+    this.cursor = (this.cursor + 1) % visibleOptionsCount;
+    this.render();
+  }
+
+  override up(): void {
+    const visibleOptionsCount = this.visibleOptions.length;
+    if (visibleOptionsCount === 0) {
+      return this.bell();
+    }
+    this.cursor = this.cursor === 0 ? visibleOptionsCount - 1 : this.cursor - 1;
+    this.render();
+  }
+
+  override down(): void {
+    const visibleOptionsCount = this.visibleOptions.length;
+    if (visibleOptionsCount === 0) {
+      return this.bell();
+    }
+    this.cursor = this.cursor === visibleOptionsCount - 1 ? 0 : this.cursor + 1;
+    this.render();
+  }
+
+  override left(): void {
+    const choice = this.highlightedChoice;
+    if (!choice) {
+      return this.bell();
+    }
+    choice.selected = false;
+    this.render();
+  }
+
+  override right(): void {
+    const choice = this.highlightedChoice;
+    if (!choice || choice.disabled) {
+      return this.bell();
+    }
+    if (this.isAtMaxChoices) {
+      return this.bell();
+    }
+    choice.selected = true;
+    this.render();
+  }
+
+  override handleSpaceToggle(): void {
+    const choice = this.highlightedChoice;
+    if (!choice) {
+      return this.bell();
+    }
+    if (choice.selected) {
+      choice.selected = false;
+      this.render();
+    } else if (choice.disabled || this.isAtMaxChoices) {
+      return this.bell();
+    } else {
+      choice.selected = true;
+      this.render();
+    }
+  }
+
+  override toggleAll(): void {
+    if (this.maxChoices !== undefined) {
+      return this.bell();
+    }
+    const choice = this.highlightedChoice;
+    if (!choice || choice.disabled) {
+      return this.bell();
+    }
+    const newSelected = !choice.selected;
+    this.visibleOptions
+      .filter(option => !option.disabled)
+      .forEach(option => (option.selected = newSelected));
+    this.render();
+  }
+
+  override submit(): void {
+    if (this.searchable && this.searchInputActive) {
+      this.searchInputActive = false;
+      this.render();
+      return;
+    }
+    super.submit();
+  }
+
+  override exit(): void {
+    if (this.searchable && (this.searchInputActive || this.searchQuery)) {
+      this.clearSearch();
+      return;
+    }
+    super.exit();
+  }
+
+  delete(): void {
+    if (!this.searchable || (!this.searchInputActive && !this.searchQuery)) {
+      return this.bell();
+    }
+    if (this.searchInputActive && !this.searchQuery) {
+      this.searchInputActive = false;
+      this.render();
+      return;
+    }
+    this.searchInputActive = true;
+    this.setSearchQuery(this.searchQuery.slice(0, -1));
+  }
+
+  override _(c: string, key: unknown): void {
+    if (!this.searchable) {
+      super._(c, key);
+      return;
+    }
+    if (this.searchInputActive) {
+      this.setSearchQuery(`${this.searchQuery}${c}`);
+      return;
+    }
+    if (c === '/') {
+      this.searchQuery = '';
+      this.searchInputActive = true;
+      this.cursor = 0;
+      this.render();
+      return;
+    }
+    super._(c, key);
+  }
+
+  private get visibleOptions(): EasMultiselectChoice[] {
+    const query = normalizeSearchText(this.searchQuery);
+    if (!this.searchable || !query) {
+      return this.value;
+    }
+    return this.value.filter(choice => isSearchMatch(searchableChoiceText(choice), query));
+  }
+
+  private get highlightedChoice(): EasMultiselectChoice | undefined {
+    return this.visibleOptions[this.cursor];
+  }
+
+  private get isAtMaxChoices(): boolean {
+    return (
+      this.maxChoices !== undefined && this.value.filter(e => e.selected).length >= this.maxChoices
+    );
+  }
+
+  private setSearchQuery(query: string): void {
+    this.searchQuery = query;
+    const visibleOptionsCount = this.visibleOptions.length;
+    this.cursor = visibleOptionsCount === 0 ? 0 : Math.min(this.cursor, visibleOptionsCount - 1);
+    this.render();
+  }
+
+  private clearSearch(): void {
+    this.searchQuery = '';
+    this.searchInputActive = false;
+    this.cursor = 0;
+    this.render();
+  }
+
+  private renderSearchablePromptStatus(): string {
+    const parts = [this.hint];
+    if (this.searchInputActive || this.searchQuery) {
+      const filterStatus = `Filter: /${this.searchQuery}`;
+      const matchStatus = `${this.visibleOptions.length}/${this.value.length} matches`;
+      parts.push(this.searchInputActive ? filterStatus : `${filterStatus} (${matchStatus})`);
+    }
+    const choice = this.highlightedChoice;
+    if (choice?.disabled) {
+      parts.push(this.warn);
+    }
+    return parts.filter(Boolean).join(' ');
+  }
+}
+
+function searchableChoiceText(choice: EasMultiselectChoice): string {
+  return [choice.title, choice.description, valueToSearchableText(choice.value)]
+    .filter(Boolean)
+    .join(' ');
+}
+
+function valueToSearchableText(value: unknown): string {
+  if (typeof value === 'string' || typeof value === 'number' || typeof value === 'boolean') {
+    return String(value);
+  }
+  if (typeof value === 'object' && value !== null) {
+    try {
+      return JSON.stringify(value);
+    } catch {
+      return '';
+    }
+  }
+  return '';
+}
+
+function normalizeSearchText(value: string): string {
+  return value.toLowerCase().replace(/\s+/g, ' ').trim();
+}
+
+function compactSearchText(value: string): string {
+  return value.replace(/[^a-z0-9]/g, '');
+}
+
+function isSearchMatch(value: string, query: string): boolean {
+  const normalizedValue = normalizeSearchText(value);
+  return (
+    normalizedValue.includes(query) ||
+    compactSearchText(normalizedValue).includes(compactSearchText(query))
+  );
 }
 
 export const easMultiselect = (args: Question): Promise<Choice[]> => {
diff --git a/ts-declarations/prompts/index.d.ts b/ts-declarations/prompts/index.d.ts
index 9a4a57ba6e..bb0ef324a2 100644
--- a/ts-declarations/prompts/index.d.ts
+++ b/ts-declarations/prompts/index.d.ts
@@ -1,11 +1,30 @@
 declare module 'prompts/lib/elements' {
   class MultiselectPrompt {
+    cursor: number;
     selectionFormat: string | undefined;
     done: boolean | undefined;
-    value: any[] | undefined;
+    hint: string;
+    maxChoices: number | undefined;
+    value: any[];
+    warn: string;
 
     constructor(parameters: any);
+    _(c: string, key: unknown): void;
+    bell(): void;
+    down(): void;
+    exit(): void;
+    first(): void;
+    handleSpaceToggle(): void;
+    last(): void;
+    left(): void;
+    next(): void;
     on(event: string, callback: (args: any) => any): any;
+    render(): void;
     renderDoneOrInstructions(): string;
+    renderOptions(options: any[]): string;
+    right(): void;
+    submit(): void;
+    toggleAll(): void;
+    up(): void;
   }
 }