diff --git a/apps/mobile/src/agent-ui.tsx b/apps/mobile/src/agent-ui.tsx
index 3e1b8915b..e7034b5d2 100644
--- a/apps/mobile/src/agent-ui.tsx
+++ b/apps/mobile/src/agent-ui.tsx
@@ -78,7 +78,7 @@ export function AgentStatus() {
   return (
     <View style={{ gap: 8 }}>
       <ErrorNotice error={error ? `Agent updates unavailable. ${error}` : ""} />
-      {error && (
+      {!!error && (
         <Button small onPress={() => void refresh().catch(() => {})}>
           Reconnect agent
         </Button>
@@ -523,7 +523,7 @@ export function TaskDetail({ taskId }: { taskId: string }) {
               ))}
             </Card>
           )}
-          {task.result && (
+          {!!task.result && (
             <Card style={{ backgroundColor: colors.green }}>
               <Text selectable style={s.text}>
                 {resultSummary(task.result)}
@@ -1036,7 +1036,7 @@ export function IdeasScreen() {
           <Card key={idea.id} style={{ gap: 7 }}>
             <Text style={s.heading}>{idea.title}</Text>
             <Chip tint={colors.green}>Started</Chip>
-            {idea.taskId && <TaskLink taskId={idea.taskId} />}
+            {!!idea.taskId && <TaskLink taskId={idea.taskId} />}
           </Card>
         ))}
     </View>
@@ -1582,7 +1582,7 @@ function MonitorCard({ monitor, onOpenTask }: { monitor: Monitor; onOpenTask?: (
         Last check: {stamp(monitor.lastCheckedAt)}
         {monitor.status === "active" ? `\nNext check: ${stamp(monitor.nextCheckAt)}` : ""}
       </Text>
-      {monitor.lastValue && (
+      {!!monitor.lastValue && (
         <Text selectable numberOfLines={5} style={s.muted}>
           {monitor.lastValue}
         </Text>
diff --git a/apps/mobile/src/chat.tsx b/apps/mobile/src/chat.tsx
index 26f3d36e3..683332b10 100644
--- a/apps/mobile/src/chat.tsx
+++ b/apps/mobile/src/chat.tsx
@@ -540,7 +540,7 @@ export function ChatScreen({
           </View>
         )}
         <ErrorNotice error={error} />
-        {error && (
+        {!!error && (
           <Button
             style={{ alignSelf: "flex-start" }}
             icon={RotateCcw}
diff --git a/apps/mobile/src/computer-workspace.tsx b/apps/mobile/src/computer-workspace.tsx
index 9150d9771..a9298cfaa 100644
--- a/apps/mobile/src/computer-workspace.tsx
+++ b/apps/mobile/src/computer-workspace.tsx
@@ -140,7 +140,7 @@ export function LinuxWorkspace({ tab }: { tab: "Terminal" | "Files" }) {
           </View>
           {!snapshot && !error && <ActivityIndicator color={colors.blueDark} />}
         </View>
-        {snapshot?.message && <Text style={s.small}>{snapshot.message}</Text>}
+        {!!snapshot?.message && <Text style={s.small}>{snapshot.message}</Text>}
         {snapshot?.enabled && (
           <View style={[s.row, { gap: 8, flexWrap: "wrap" }]}>
             {running ? (
diff --git a/apps/mobile/src/details.tsx b/apps/mobile/src/details.tsx
index fa2788000..1ff3a14a7 100644
--- a/apps/mobile/src/details.tsx
+++ b/apps/mobile/src/details.tsx
@@ -184,7 +184,7 @@ function MailDetail({ mail: m }: { mail: Mail }) {
         </Card>
       ))}
       <ErrorNotice error={error} />
-      {error && <Button onPress={() => setRetry(retry + 1)}>Reload conversation</Button>}
+      {!!error && <Button onPress={() => setRetry(retry + 1)}>Reload conversation</Button>}
       <Button
         primary
         icon={Reply}
@@ -674,7 +674,7 @@ function ReviewDetail({ initial }: { initial: ActionProposal }) {
         )}
       </Card>
       <ErrorNotice error={error || action.error} />
-      {action.result && (
+      {!!action.result && (
         <Card style={{ marginTop: 16, backgroundColor: colors.green, padding: 18 }}>
           <Text selectable style={s.text}>
             {resultSummary(action.result)}
diff --git a/apps/mobile/src/screens.tsx b/apps/mobile/src/screens.tsx
index 8b0639b60..86ba851d5 100644
--- a/apps/mobile/src/screens.tsx
+++ b/apps/mobile/src/screens.tsx
@@ -778,7 +778,7 @@ export function CalendarScreen() {
           {selected?.name || "Your calendar"} · {zone}. Events show their own time zone.
         </Text>
         <ErrorNotice error={error} />
-        {error && (
+        {!!error && (
           <Button small onPress={() => setRetry(retry + 1)}>
             Try again
           </Button>
@@ -898,7 +898,7 @@ export function BrowserScreen() {
                 <Chip tint={b.status === "active" ? colors.green : colors.canvas}>{b.status}</Chip>
                 <ArrowUpRight size={17} color={colors.muted} />
               </View>
-              {b.previewUrl && (
+              {!!b.previewUrl && (
                 <Image
                   source={{ uri: api.url(b.previewUrl) }}
                   resizeMode="cover"
diff --git a/apps/mobile/src/thread-artifacts.tsx b/apps/mobile/src/thread-artifacts.tsx
index 2444a0110..9aa98c4bb 100644
--- a/apps/mobile/src/thread-artifacts.tsx
+++ b/apps/mobile/src/thread-artifacts.tsx
@@ -104,7 +104,7 @@ export function TaskThreadCard({ task }: { task: AgentTask }) {
         <ArtifactCard key={artifact.id} artifact={artifact} />
       ))}
       <ErrorNotice error={error} />
-      {error && (
+      {!!error && (
         <Button small onPress={() => setAttempt((value) => value + 1)}>
           Reload task results
         </Button>
diff --git a/apps/mobile/src/ui.tsx b/apps/mobile/src/ui.tsx
index e9e95afa1..ce36605cb 100644
--- a/apps/mobile/src/ui.tsx
+++ b/apps/mobile/src/ui.tsx
@@ -295,7 +295,7 @@ export function Sheet({
           >
             <View style={{ flex: 1, gap: 4 }}>
               <Text style={s.title}>{title}</Text>
-              {subtitle && <Text style={s.muted}>{subtitle}</Text>}
+              {!!subtitle && <Text style={s.muted}>{subtitle}</Text>}
             </View>
             <IconButton icon={X} label="Close details" onPress={onClose} />
           </View>
@@ -393,7 +393,7 @@ export function LinkRow({
       </View>
       <View style={{ flex: 1, gap: 3 }}>
         <Text style={[s.text, { fontWeight: "500" }]}>{title}</Text>
-        {detail && <Text style={s.small}>{detail}</Text>}
+        {!!detail && <Text style={s.small}>{detail}</Text>}
       </View>
       <ChevronRight size={15} color={colors.muted} />
     </Pressable>