diff --git a/src/components/SidebarDrawer.tsx b/src/components/SidebarDrawer.tsx
index b23e627a..1f8e5f1f 100644
--- a/src/components/SidebarDrawer.tsx
+++ b/src/components/SidebarDrawer.tsx
@@ -48,6 +48,7 @@ import {
 } from '../lib/notification-mutes';
 import { serverSupportsEmailPush } from '../lib/push-notifications';
 import { mailboxIconKind, type MailboxIconKind } from '../lib/mailbox-icon';
+import { useSheetBottomInset } from '../lib/sheet-bottom-inset';
 
 const CHEVRON_SLOT = 20;
 const INDENT_STEP = 12;
@@ -242,10 +243,12 @@ interface SheetAction {
 function ActionSheet({ title, actions, onClose }: { title: string; actions: SheetAction[]; onClose: () => void }) {
   const c = useColors();
   const styles = React.useMemo(() => makeStyles(c), [c]);
+  // The Modal reaches under a tablet's taskbar: keep the last action above it.
+  const bottomInset = useSheetBottomInset();
   return (
     <Modal supportedOrientations={MODAL_ORIENTATIONS} visible transparent animationType="fade" onRequestClose={onClose} statusBarTranslucent>
       <Pressable style={styles.sheetOverlay} onPress={onClose} />
-      <View style={styles.sheet}>
+      <View style={[styles.sheet, { paddingBottom: spacing.xl + bottomInset }]}>
         <Text style={styles.sheetTitle} numberOfLines={1}>{title}</Text>
         {actions.map((a) => {
           const Icon = a.icon;
@@ -278,6 +281,8 @@ function NamePrompt({ title, message, initial, confirmLabel, onSubmit, onClose }
   const styles = React.useMemo(() => makeStyles(c), [c]);
   const t = useLocaleStore((s) => s.t);
   const [value, setValue] = React.useState(initial ?? '');
+  // Centred above the keyboard (the field autofocuses) and the taskbar.
+  const bottomInset = useSheetBottomInset();
   const submit = () => {
     const name = value.trim();
     if (!name) return;
@@ -287,27 +292,29 @@ function NamePrompt({ title, message, initial, confirmLabel, onSubmit, onClose }
   return (
     <Modal supportedOrientations={MODAL_ORIENTATIONS} visible transparent animationType="fade" onRequestClose={onClose} statusBarTranslucent>
       <Pressable style={styles.sheetOverlay} onPress={onClose} />
-      <View style={styles.promptCard}>
-        <Text style={styles.sheetTitle}>{title}</Text>
-        {message ? <Text style={styles.promptMessage}>{message}</Text> : null}
-        <TextInput
-          accessibilityLabel={t('mailbox_context_menu.placeholder_folder_name', 'Folder name')}
-          value={value}
-          onChangeText={setValue}
-          placeholder={t('mailbox_context_menu.placeholder_folder_name', 'Folder name')}
-          placeholderTextColor={c.textMuted}
-          style={styles.promptInput}
-          autoFocus
-          onSubmitEditing={submit}
-          returnKeyType="done"
-        />
-        <View style={styles.promptActions}>
-          <Pressable onPress={onClose} style={styles.promptButton} hitSlop={6}>
-            <Text style={styles.promptButtonText}>{t('common.cancel', 'Cancel')}</Text>
-          </Pressable>
-          <Pressable onPress={submit} style={styles.promptButton} hitSlop={6} disabled={!value.trim()}>
-            <Text style={[styles.promptButtonText, { color: c.primary }, !value.trim() && { opacity: 0.5 }]}>{confirmLabel}</Text>
-          </Pressable>
+      <View style={[styles.promptCenter, { paddingBottom: bottomInset }]} pointerEvents="box-none">
+        <View style={styles.promptCard}>
+          <Text style={styles.sheetTitle}>{title}</Text>
+          {message ? <Text style={styles.promptMessage}>{message}</Text> : null}
+          <TextInput
+            accessibilityLabel={t('mailbox_context_menu.placeholder_folder_name', 'Folder name')}
+            value={value}
+            onChangeText={setValue}
+            placeholder={t('mailbox_context_menu.placeholder_folder_name', 'Folder name')}
+            placeholderTextColor={c.textMuted}
+            style={styles.promptInput}
+            autoFocus
+            onSubmitEditing={submit}
+            returnKeyType="done"
+          />
+          <View style={styles.promptActions}>
+            <Pressable onPress={onClose} style={styles.promptButton} hitSlop={6}>
+              <Text style={styles.promptButtonText}>{t('common.cancel', 'Cancel')}</Text>
+            </Pressable>
+            <Pressable onPress={submit} style={styles.promptButton} hitSlop={6} disabled={!value.trim()}>
+              <Text style={[styles.promptButtonText, { color: c.primary }, !value.trim() && { opacity: 0.5 }]}>{confirmLabel}</Text>
+            </Pressable>
+          </View>
         </View>
       </View>
     </Modal>
@@ -1610,10 +1617,13 @@ function makeStyles(c: ThemePalette) {
     minHeight: 44,
   },
   sheetRowText: { ...typography.body, color: c.text },
+  // Centres the prompt in the space above the keyboard and the navigation bar.
+  promptCenter: {
+    ...StyleSheet.absoluteFillObject,
+    justifyContent: 'center',
+    paddingHorizontal: spacing.lg,
+  },
   promptCard: {
-    position: 'absolute',
-    left: spacing.lg, right: spacing.lg,
-    top: '30%',
     backgroundColor: c.popover,
     borderRadius: radius.md,
     borderWidth: 1,
diff --git a/src/components/__tests__/sheet-bottom-inset.test.ts b/src/components/__tests__/sheet-bottom-inset.test.ts
index 112c920e..37d24618 100644
--- a/src/components/__tests__/sheet-bottom-inset.test.ts
+++ b/src/components/__tests__/sheet-bottom-inset.test.ts
@@ -13,11 +13,7 @@ import path from 'node:path';
 const SRC = path.resolve(__dirname, '../..');
 
 // Sheets in files other agents own; their fix is reported, not made here.
-const OWNED_ELSEWHERE = new Set([
-  'components/SidebarDrawer.tsx',
-  'components/calendar/CalendarEditSheet.tsx',
-  'components/sharing/ShareCollectionSheet.tsx',
-]);
+const OWNED_ELSEWHERE = new Set<string>([]);
 
 function sourceFiles(dir: string): string[] {
   return fs.readdirSync(dir, { withFileTypes: true }).flatMap((e) => {
@@ -48,6 +44,16 @@ function padsBottom(body: string): boolean {
   return /bottomInset|insets\.bottom/.test(body);
 }
 
+/** A body with a text field that opens the keyboard as the Modal opens. */
+function autoFocuses(body: string): boolean {
+  return /\bautoFocus\b/.test(body);
+}
+
+/** Padded by useSheetBottomInset under any name (bottomInset, altInset, ...). */
+function padsForKeyboard(body: string): boolean {
+  return /[a-zA-Z]*Inset\b|insets\.bottom/.test(body.replace(/\bsheetInsets\b/g, ''));
+}
+
 describe('bottom sheets in a Modal', () => {
   it('pad their content above the navigation bar or taskbar', () => {
     const offenders = sourceFiles(SRC).flatMap((file) => {
@@ -61,8 +67,32 @@ describe('bottom sheets in a Modal', () => {
     expect(offenders).toEqual([]);
   });
 
+  // A dialog whose field autofocuses opens with the keyboard up. The Modal
+  // window doesn't shrink for it, so a card at a fixed spot (the folder name
+  // prompt at top 30%) or centred in the full screen (Compose's image
+  // description) had its field or buttons under the keyboard.
+  it('keep a dialog with an autofocused field above the keyboard', () => {
+    const offenders = sourceFiles(SRC).flatMap((file) => {
+      const rel = path.relative(SRC, file).split(path.sep).join('/');
+      if (OWNED_ELSEWHERE.has(rel)) return [];
+      const source = fs.readFileSync(file, 'utf8');
+      return modalBodies(source)
+        .filter((body) => autoFocuses(body) && !padsForKeyboard(body))
+        .map(() => rel);
+    });
+    expect(offenders).toEqual([]);
+  });
+
+  it('centres the folder name prompt instead of pinning it at 30 %', () => {
+    const source = fs.readFileSync(path.join(SRC, 'components/SidebarDrawer.tsx'), 'utf8');
+    expect(source).not.toMatch(/top:\s*'30%'/);
+  });
+
   it('covers the sheets the tablet walkthrough found', () => {
-    for (const rel of ['components/settings/FolderSettings.tsx', 'screens/FilesScreen.tsx', 'components/files/ShareSheet.tsx']) {
+    for (const rel of [
+      'components/settings/FolderSettings.tsx', 'screens/FilesScreen.tsx', 'components/files/ShareSheet.tsx',
+      'components/SidebarDrawer.tsx', 'components/calendar/CalendarEditSheet.tsx', 'components/sharing/ShareCollectionSheet.tsx',
+    ]) {
       const bodies = modalBodies(fs.readFileSync(path.join(SRC, rel), 'utf8')).filter(rendersSheet);
       expect(bodies.length, rel).toBeGreaterThan(0);
     }
@@ -75,5 +105,7 @@ describe('bottom sheets in a Modal', () => {
     expect(rendersSheet(bodies[0])).toBe(true);
     expect(padsBottom(bodies[0])).toBe(true);
     expect(padsBottom('<Modal><View style={styles.sheet} /></Modal>')).toBe(false);
+    expect(padsForKeyboard('<View style={[styles.backdrop, { paddingBottom: spacing.lg + altInset }]}>')).toBe(true);
+    expect(padsForKeyboard('<View style={[styles.backdrop, { paddingLeft: sheetInsets.left }]}>')).toBe(false);
   });
 });
diff --git a/src/components/calendar/CalendarEditSheet.tsx b/src/components/calendar/CalendarEditSheet.tsx
index 739aebc0..4fbc9aca 100644
--- a/src/components/calendar/CalendarEditSheet.tsx
+++ b/src/components/calendar/CalendarEditSheet.tsx
@@ -33,6 +33,7 @@ const CUSTOM_COLOR_GRID = customColorGrid();
 import Button from '../Button';
 import { MODAL_ORIENTATIONS } from '../../lib/modal-orientations';
 import { useSheetInsets } from '../../lib/use-layout';
+import { useSheetBottomInset } from '../../lib/sheet-bottom-inset';
 
 export interface CalendarEditValues {
   name: string;
@@ -147,6 +148,8 @@ interface CalendarEditSheetProps {
 export function CalendarEditSheet({ visible, calendar, onSave, onClose }: CalendarEditSheetProps) {
   // Centred on a wide window, clear of side insets in landscape.
   const sheetInsets = useSheetInsets();
+  // Create above a tablet's taskbar, the hex field above the keyboard.
+  const bottomInset = useSheetBottomInset(visible);
   const c = useColors();
   const styles = React.useMemo(() => makeStyles(c), [c]);
   const t = useLocaleStore((s) => s.t);
@@ -216,7 +219,7 @@ export function CalendarEditSheet({ visible, calendar, onSave, onClose }: Calend
       <TouchableWithoutFeedback accessible={false} onPress={onClose}>
         <View style={[styles.backdrop, { paddingLeft: sheetInsets.left, paddingRight: sheetInsets.right }]}>
           <TouchableWithoutFeedback accessible={false}>
-            <View style={styles.sheet}>
+            <View style={[styles.sheet, { paddingBottom: spacing.xxl + bottomInset }]}>
               <Text style={styles.title}>
                 {calendar
                   ? t('calendar.management.edit_calendar', 'Edit calendar')
diff --git a/src/components/sharing/ShareCollectionSheet.tsx b/src/components/sharing/ShareCollectionSheet.tsx
index 470f9523..102bf117 100644
--- a/src/components/sharing/ShareCollectionSheet.tsx
+++ b/src/components/sharing/ShareCollectionSheet.tsx
@@ -22,6 +22,7 @@ import { useColors } from '../../theme/colors';
 import { useLocaleStore } from '../../stores/locale-store';
 import { MODAL_ORIENTATIONS } from '../../lib/modal-orientations';
 import { useSheetInsets } from '../../lib/use-layout';
+import { useSheetBottomInset } from '../../lib/sheet-bottom-inset';
 
 /** A role the sheet offers: its rights and the webmail's name for it. */
 export interface SharePreset<R> {
@@ -64,6 +65,8 @@ export function ShareCollectionSheet<R extends object>({
 }: ShareCollectionSheetProps<R>) {
   // Centred on a wide window, clear of side insets in landscape.
   const sheetInsets = useSheetInsets();
+  // Done above a tablet's taskbar, the search field above the keyboard.
+  const bottomInset = useSheetBottomInset();
   const c = useColors();
   const styles = React.useMemo(() => makeStyles(c), [c]);
   const t = useLocaleStore((s) => s.t);
@@ -208,7 +211,7 @@ export function ShareCollectionSheet<R extends object>({
       <TouchableWithoutFeedback accessible={false} onPress={onClose}>
         <View style={[styles.backdrop, { paddingLeft: sheetInsets.left, paddingRight: sheetInsets.right }]}>
           <TouchableWithoutFeedback accessible={false}>
-            <View style={styles.sheet}>
+            <View style={[styles.sheet, { paddingBottom: spacing.xxl + bottomInset }]}>
               <View style={styles.titleRow}>
                 <Users size={18} color={c.textMuted} />
                 <Text style={styles.title} numberOfLines={1}>
diff --git a/src/screens/ComposeScreen.tsx b/src/screens/ComposeScreen.tsx
index d604f9b1..b0997960 100644
--- a/src/screens/ComposeScreen.tsx
+++ b/src/screens/ComposeScreen.tsx
@@ -32,6 +32,7 @@ import { getEmailInitials } from '../lib/avatar-utils';
 import { useContactsStore, type RecipientSuggestion } from '../stores/contacts-store';
 import { useKeyboardObstruction } from '../lib/use-keyboard-obstruction';
 import { useLayout } from '../lib/use-layout';
+import { useSheetBottomInset } from '../lib/sheet-bottom-inset';
 import { createAfterDismissQueue } from '../lib/after-modal-dismiss';
 import { useLocaleStore } from '../stores/locale-store';
 import { useSettingsStore } from '../stores/settings-store';
@@ -2084,6 +2085,8 @@ export default function ComposeScreen({ route, navigation }: Props) {
   // readers skip it; Skip leaves it undescribed.
   const [altQueue, setAltQueue] = React.useState<Array<{ cid: string; src: string }>>([]);
   const altTarget = altQueue[0] ?? null;
+  // The field autofocuses: the card centres above the keyboard and the taskbar.
+  const altInset = useSheetBottomInset(!!altTarget);
   const [altText, setAltText] = React.useState('');
   const [altDecorative, setAltDecorative] = React.useState(false);
   React.useEffect(() => {
@@ -2102,6 +2105,7 @@ export default function ComposeScreen({ route, navigation }: Props) {
   // ── Link prompt (Modal) ──────────────────────────────────────────────
   const [linkPromptVisible, setLinkPromptVisible] = React.useState(false);
   const [linkPromptValue, setLinkPromptValue] = React.useState('');
+  const linkInset = useSheetBottomInset(linkPromptVisible);
 
   const openLinkPrompt = () => {
     setLinkPromptValue('https://');
@@ -3092,7 +3096,7 @@ export default function ComposeScreen({ route, navigation }: Props) {
         animationType="fade"
         onRequestClose={() => setLinkPromptVisible(false)}
       >
-        <View style={styles.modalBackdrop}>
+        <View style={[styles.modalBackdrop, { paddingBottom: spacing.lg + linkInset }]}>
           <View style={styles.modalCard}>
             <Text style={styles.modalTitle}>
               {t('email_composer.add_link', 'Add link')}
@@ -3143,7 +3147,7 @@ export default function ComposeScreen({ route, navigation }: Props) {
         animationType="fade"
         onRequestClose={closeAltPrompt}
       >
-        <View style={styles.modalBackdrop}>
+        <View style={[styles.modalBackdrop, { paddingBottom: spacing.lg + altInset }]}>
           <View style={styles.modalCard}>
             <Text style={styles.modalTitle}>{t('email_composer.image_alt.title', 'Describe this image')}</Text>
             <Text style={styles.modalLabel}>